A clip shows a big house on a sunny day in a quiet neighbourhood. Next, the team appears in a room, full of old things.

Kyla places an old suitcase on a table. She is in her teens. She has long dark straight hair in a ponytail and wears a sleeveless shirt and green trousers.

Kyla reads the label on the case. It reads "TO FILL
OR NOT TO FILL."

E.B. is a teenager. He has short curly black hair and is clean-shaven. He wears a plaid white and blue shirt over a blue T-shirt and jeans.

E.B. says OH... MAYBE HERMIONE
HAD A TOOTHACHE AND
SHE NEEDED A FILLING?

Kyla says WHOA. ISLANDS.
LOTS OF ISLANDS.

They take out pictures.

E.B. says LOOK AT THIS ONE.
SHAPED LIKE A PALM TREE. WEIRD.

E.B. takes a yellow safety hat.

E.B. says OH!
I "FILL" THIS HARDHAT
PRETTY WELL, AM I RIGHT?

Kyla says HM... A BIRD
MIGRATION MAP. WHOA,
THAT'S A LOT OF BIRDS.
BOY, DO THEY EVER FLY
A LONG WAY.

E.B. says OKAY. WELL, WHAT DOES THAT
HAVE TO DO WITH THIS HARDHAT?

Kyla says MAYBE THE ANSWER
IS IN THIS BUILDING?

E.B. says OH, THERE'S SOMETHING WRITTEN
ON THE BACK OF THE PHOTO.

Kyla reads "TORONTO ARCHIVES."
She says DO YOU THINK THE ARCHIVE
CHARGES LATE FEES?

The hardhat has a label that reads "Brocolini Construction."

E.B. says I'M GOING TO BROCCOLINI
CONSTRUCTION TO SEE IF THEY HAVE
ANY IDEA ABOUT FILLING.
OR NOT FILLING!

Kyla says SO I GUESS THE ARCHIVES
ARE ALL MINE?

E.B. says MM-HM. I HOPE YOU'RE
SAVING UP YOUR ALLOWANCE!
THOSE LATE FEES CAN ADD UP.

Tilly is in her mid-forties. She has dark brown hair over her shoulders and a wears a blue dotted blouse.

Tilly says OH... HAVE FUN
INVESTIGATING! I'M GOING TO TAKE
A LOOK AT THOSE BIRDS.

Kyla says YEAH, SURE.

Tilly makes a bird-like noise.

E.B. says WHAT?

Kyla says DON'T DISTRACT HER.
IT'S LIKE, YOU NEVER WAKE UP A
SLEEPWALKER. IF YOU DO, THERE'S
NO TELLING WHAT COULD HAPPEN.

Tilly squawks.

(Theme music plays)

A dark red background with letter prints shows the shapes of a girl and a boy in the middle. It lights up and reveals EB and Kyla smiling.

Next, the kids are in a room looking at a portrait. The image zooms in a reveals the image of a woman in her sixties with white hair and a hat.

The song plays and the lyrics go
HISTORY IS FULL OF MYSTERIES
GREAT AUNT HERMIONE
COULD BE HEARD TO SAY

The woman in her sixties unfreezes and picks up a blue shining object from the floor.

The song continues
YOU HAVE TO KNOW
WHAT CAME BEFORE
TO NAVIGATE THE WORLD TODAY

Fast clips show images of a river, a bridge at night and a fire explosion.

The song continues
SHE WAS GOING TO WRITE A BOOK
CALLED "MYSTERY FILES."

Next, pictures of dogs are followed by the woman in her sixties writing down notes on a journal.

The song continues
TO TELL WHAT SHE UNCOVERED
BUT TIME RAN OUT
NEW ADVENTURES CAME FIRST
SO SHE LEFT HER SECRETS
UNDISCOVERED

The woman in her sixties drives a car and next flies a small aircraft.

The song continues
AUNT TILLY INHERITED
HER BIG OLD HOUSE
FILLED WITH FILES AND CLUES
OF MUMMIES
SPIES AND VOYAGEURS
SCARY CREATURES TOO

Tilly stands in front of the house. She looks shocked. Next, EB checks a metal box full of objects. A mommy, a skull, and an eel appear among other objects.

The song continues
E.B. AND KYLA
WILL COME THROUGH
THEY'LL SOLVE

Kyla shows her phone screen. Tilly holds a lamp and a laptop shows the progress of file saving in a box.

The song continues
THE MYSTERY FILES
UNRAVEL ALL THE MYSTERIES
UPLOAD HIDDEN HISTORIES
THEY'LL SOLVE

EB, Kyla and Tilly pose together in a picture. The title of the show appears below in blue letters: "The Mystery Files."

The song ends
THE MYSTERY FILES.

(music plays)
E.B. walks down a street. He uses his cell phone to film himself.

E.B. says IT TURNS OUT THERE'S A
LOT OF CONSTRUCTION IN TORONTO,
AND MY INVESTIGATION TURNED UP
THIS. THIS SITE MATCHES MY FIRST
CLUE. BROCCOLINI! NOW ALL I HAVE
TO DO IS FIND OUT WHAT THEY'RE
FILLING, OR NOT FILLING.
YOU KNOW WHAT? I KIND OF LIKE
THIS LOOK ON ME!

He puts on the yellow hardhat.

E.B. says HI! I'M E.B. NICE TO MEET YOU.

Mo stands in a site looking at a bulldozer. He’s in his thirties, clean-shaven with black hair. He’s wearing a white hardhat, orange safety vest and gray polo-shirt.

Mo says HI, IT'S MO.

E.B. says HI, MO. IS THIS YOUR
HARDHAT, BY ANY CHANCE?

Mo says YEAH, IT'S THE HARDHAT.
IT'S A VERY OLD ONE.

E.B. says WELL... WOW. OKAY,
I'M TRYING TO FIGURE OUT
WHAT YOU GUYS ARE FILLING.

Mo says WE'RE ACTUALLY
DOING THE OPPOSITE.

E.B. says OKAY.

Mo says YOU SEE, TO BUILD A NEW
BUILDING WE HAVE TO CLEAR OUT
THE OLD HOUSES. THEY HAVE TO BE
DEMOLISHED, AND WE ARE IN THE
EXCAVATION PROCESS RIGHT NOW.
SO, YOU SEE THE GUY
DIGGING OUT THE DIRT?

E.B. says DO YOU GUYS EVER USE DYNAMITE
TO BLOW OUT HOUSES, LIKE...

E.B. imagines a controlled explosion.

Mo says DOING THAT DOWNTOWN
IS A BIG RISKY.

E.B. says TRUE.

Mo says SO, YOU WON'T SEE THAT
A LOT THERE. YOU MIGHT
SEE IT IN THE MOVIES.
IS THIS YOUR FIRST TIME?

E.B. says YES, IT IS.

They climb down a ladder.

Mo says SO, WE'RE PRETTY DEEP. THIS
IS THREE LEVELS OF PARKING. SO
THIS IS WHERE YOU PARK YOUR CAR.

E.B. says CHECK OUT WHERE I AM!
He films the site and says LOOK AT THAT.
LOOK AT THE CRANE.
LOOK AT THIS!
THIS WHOLE THING IS
SO IMPRESSIVE. HOW DEEP
ARE WE RIGHT NOW?

Mo says I'D SAY 20 METRES.
LIKE, 6 STORIES DOWN.

E.B. says IT LOOKS A LOT SMALLER
FROM UP THERE, BUT ONCE
YOU'RE DOWN HERE...

Mo says YOU FEEL LIKE
YOU'RE A TINY PERSON.

E.B. says YES. EVERYTHING'S HUGE!
WAIT, BUT IF THERE WAS ALREADY A
BUILDING HERE, DOESN'T THAT MEAN
THAT THERE WAS ALREADY A HOLE
HERE? WHY WOULD YOU HAVE
TO DIG A NEW ONE?

Mo says WELL, WHENEVER YOU'RE
BUILDING A NEW BUILDING,
YOU ALWAYS WANT TO GO DEEPER,
YOU WANT TO GO BIGGER. SO
THERE'S ALWAYS A DIFFERENCE.
WE ALWAYS HAVE TO DO SOME WORK.

E.B. says SO YOU DON'T FILL HOLES,
YOU JUST EMPTY THEM OUT?

Mo says WELL, WHERE WE'RE AT RIGHT
NOW, WE'RE TAKING OUT THAT LAST
BIT. BUT THEN WE'RE GOING TO
START GOING BACK UP WITH THE
BUILDING. ALL THE LEVELS AND ALL
THE STORIES THAT PEOPLE LIVE IN.
BUT WE PRODUCE FILL, IF
THAT'S WHAT YOU'RE ASKING.

E.B. says FILL? OKAY. NOW
WE'RE GETTING SOMEWHERE.
MO SAYS THEY PRODUCE FILL HERE.
SO I'M PRETTY SURE I'M
GETTING CLOSER TO SOLVING
GREAT AUNT HERMIONE'S MYSTERY.
THE LABEL ON THE BOX DOES SAY
"TO FILL OR NOT TO FILL."
BUT WHAT EXACTLY IS FILL?

Mo says THIS IS WHAT
I'M TALKING ABOUT.

E.B. says THAT? BUT THAT'S JUST DIRT.

Mo says YEAH. WELL, BETWEEN THIS
DIRT... BETWEEN THE CONCRETE
THAT'S OVER THERE... EVERYTHING
WE'RE GETTING RID OF FROM THIS
SITE TO MAKE SPACE FOR THE NEW
BUILDING, THAT IS FILL.

E.B. says THEN WHY IS IT CALLED
FILL IF YOU'RE EMPTYING IT
AND TAKING IT OUT?

Mo says IT COMES FROM THE FACT
THAT WE TAKE THIS SOIL AND DIRT
AND FILL AND WE PUT IT IN
TRUCKS, AND IT GETS CARRIED AWAY
TO A LANDFILL.

E.B. says SO IT'S GOING
TO FILL ANOTHER HOLE?

Mo says YEAH. SO, YOU SEE
THAT EXCAVATOR OVER THERE?

E.B. says UH-HUH.

Mo says IT ONLY TAKES ABOUT
3 OR 4 SCOOPS TO FILL ONE
OF THOSE BIG TRUCKS UP.

E.B. says REALLY? THAT'S A BIG
SCOOPER. I WONDER HOW MUCH ICE
CREAM YOU CAN GET WITH THAT?

Mo says OH MAN. THAT'S A LOT.

E.B. says I COULD EAT IT.
I LOVE ICE CREAM.
"TO FILL OR NOT TO FILL."..
WELL THANKS, MO! YOU ACTUALLY
HELPED A LOT WITH THIS MYSTERY.
I WOULD SHAKE YOUR HAND, BUT...

Mo says LOOK AT MY HANDS, TOO.

Their hands are dirty.

E.B. says YEAH. MAYBE
WE SHOULD FIST BUMP.

Mo says GREAT MEETING YOU.

E.B. calls Kyla and Tilly. Kyla's phone beeps.

Kyla says HI GUYS.

Tilly squaws imitating bird noises.

E.B. says IT'S NOT A VERB. IT'S A NOUN!

Kyla says WHAT ARE YOU TALKING ABOUT?

E.B. says FILL. YOU KNOW, AT THE
CONSTRUCTION SITE? THEY DON'T
FILL THINGS UP, AS IN "TO FILL."
THEY MAKE FILL. IT'S A NOUN.

Kyla says SO WHAT DO THEY DO WITH
THE NOUN? I MEAN, THE FILL?

E.B. says THEY PUT IT IN LANDFILL SITES.

Kyla says THEY PUT FILL INTO LANDFILLS?

E.B. says RIGHT.

Tilly continues to squawk.

Tilly says SORRY. I HAD TO WRAP
THAT UP. YOU CAN'T INTERRUPT
THE LOVE DANCE OF THE
BLACK-CROWNED NIGHT HERON.

E.B. says THE WHAT?

Tilly says IT'S A BIRD ON THE LIST.
I'VE BEEN LEARNING BIRD CALLS.
(TILLY SQUAWKS.)
BUT NEVER FEAR. I DID
DIG AROUND FOR YOU, E.B.,
AND DISCOVERED QUITE A BIT
ABOUT LANDFILL.
EVERY YEAR, A BIG CITY LIKE
TORONTO CAN GENERATE ENOUGH FILL
TO LOAD UP TO A MILLION TRUCKS!
ENOUGH TO FILL AT LEAST
15 STADIUMS FULL!
SO YOU CAN IMAGINE
HOW MANY STADIUMS OF FILL
ARE GENERATED BY ALL OF
NORTH AMERICA, OR THE WORLD.

Tilly plays an animated clip on her computer that shows what she explains.

Kyla says WOW. BUT OBVIOUSLY, THEY DON'T
ACTUALLY PUT THE FILL IN THE
STADIUM. SO WHERE DOES IT GO?

E.B. says AND WHAT DOES IT HAVE
TO DO WITH THE OTHER CLUES?

Kyla says I DON'T KNOW. BUT I
CALLED THE ARCHIVES, AND FOUND
OUT THAT THE BUILDING IN THE
PICTURE IS THE OLD HARBOUR
COMMISSION BUILDING. AND IT
TURNS OUT THAT THAT BUILDING
IS STILL IN DOWNTOWN TORONTO.
THAT'S WHERE I'M GOING.

Tilly says AND I'M GOING TO "DIG
IN" TO THE TORONTO HARBOUR!

Kyla shakes her head and says GREAT! AND I'LL SEE WHAT I CAN
FIND OUT ABOUT THE BUILDING.
SO HERE'S THE PICTURE,
AND HERE'S THE BUILDING.
PICTURE...
BUILDING.

Kyla looks at a black and white picture of a building by a body of water.

Kyla says HUH. IT'S WEIRD. WHERE DID
ALL THE WATER GO?
THIS IS DEFINITELY A MYSTERY.

Kyla meets Wayne on the street. He’s in his late forties, with a goatee and short hair. He’s wearing a checked brown hat, glasses, a gray jacket and white shirt.

Kyla says HI, WAYNE.

Wayne says HEY, KYLA!

Kyla says THANK YOU FOR AGREEING
TO MEET WITH ME.

Wayne says HAPPY TO HELP OUT.

Recording herself, Kyla says THIS IS WAYNE REEVES,
CHIEF CURATOR OF THE CITY OF
TORONTO MUSEUMS. HE'S GOING
TO HELP US SOLVE OUR MYSTERY.

Wayne says SO WHAT CAN I DO TO HELP?

Kyla says WELL ACTUALLY, IT'S
THIS PICTURE. WE'RE TRYING
TO FIGURE OUT HOW IT CONNECTS
TO TWO OTHER CLUES. BUT NOW
I HAVE AN EVEN BIGGER MYSTERY.

Wayne says WHAT'S THAT?

Kyla says WHO MOVED THE BUILDING,
AND WHY? BASED ON THIS PHOTO,
THE LAKE SHOULD BE RIGHT HERE.

ORIGINALLY, THE SHORELINE
WAS SOMEWHERE ELSE ALTOGETHER.

Kyla says WHERE WAS THAT?

Wayne says THAT-A-WAY.

Kyla says ISN'T THAT AWAY
FROM THE HARBOUR?

Wayne says YES. A LONG, LONG WALK AWAY.

An animation shows Kyla and Wayne’ faces crossing a street map.

Wayne says YOU KNOW, KYLA. THERE ARE A LOT
OF CLUES ABOUT HISTORY IN NAMES.
AND STREET NAMES ARE
A GREAT EXAMPLE OF THIS.

Kyla says FRONT STREET.
SO DOES THAT MEAN THAT WE'RE
AT THE FRONT OF THE CITY?

Wayne says THAT'S RIGHT.

Kyla says BUT SHOULDN'T THE FRONT
OF THE CITY BE BY THE LAKE?
WE AREN'T NEAR THE LAKE.

Wayne says NOT TODAY. BUT
WE WOULD HAVE BEEN, 150 YEARS
AGO. SO IS THERE ANYTHING YOU
NOTICE ABOUT THE BUILDING NOW?

Kyla says YEAH. IT'S WEIRD.
THE BUILDING LOOKS LIKE
IT WAS ON A PIER, ON A LAKE.
BUT THERE'S NO LAKE HERE.

Wayne says YOU'RE ABSOLUTELY RIGHT. 150
YEARS AGO, THERE WAS. AND SHIPS
WOULD HAVE COME IN, DELIVERING
ALL OF THEIR CARGOES TO GO INTO
THE MARKET HERE ON FRONT STREET.

A clip on the team’s computer shows and old picture of the building next to a lake. Then, a round dotted line highlights the building.

Kyla says SO THIS WAS A SHORELINE?
THAT'S COOL! YOU CAN SEE EXACTLY
WHERE THE LAKE WOULD HAVE BEEN.
SO WHAT HAPPENED?
DID THE LAKE SHRINK, OR...?

Wayne says NOT EXACTLY. BUT I'VE
GOT ONE MORE THING TO SHOW YOU.
CHECK OUT THAT SIGN.

Kyla says LAKE SHORE BOULEVARD.
LAKE SHORE! THAT MEANS
THE LAKE SHOULD BE
RIGHT HERE, SHOULDN'T IT?

Wayne says INSTEAD,
IT'S STILL OVER 100 METRES AWAY.

Kyla says SO THIS STREET WAS
ALSO ONCE BY THE LAKE?

Wayne says EXACTLY.
LET ME SHOW YOU ONE LAST THING.

(SIREN)
Now, they stand in a garden by skyscrapers at the port.

Kyla says I HARDLY RECOGNIZE
ANYTHING IN THIS PICTURE.
PRETTY MUCH JUST THE WATER.

Wayne says YOU'RE RIGHT.
JUST ABOUT EVERYTHING
DOWN HERE HAS CHANGED.

Kyla says SO THEY ACTUALLY
MOVED THE SHORELINE?

Wayne says THAT'S RIGHT.

Kyla says BUT WHAT'S THE HARBOUR
COMMISSION BUILDING HAVE TO DO
WITH ALL OF THIS?

Wayne says WELL, THE TORONTO HARBOUR
COMMISSION WAS CREATED IN 1911,
AND ITS JOB WAS TO EXPAND AND
DEVELOP THE WATERFRONT. AND
IT CAME UP WITH A PLAN IN 1912
TO MAKE ALL OF THAT HAPPEN.

Kyla says EXPAND THE HARBOUR?
YOU MEAN, THEY EXPANDED
IT OUT INTO THE LAKE?

Wayne says YOU'RE
ABSOLUTELY RIGHT. EVERYTHING
THAT WE SEE AROUND US, ALL THE
BUILDINGS, ALL THE EXPRESSWAYS
AROUND HERE, EVEN THE CN TOWER,
MUCH OF THE DOWNTOWN WAS
ALL BUILT ON MANMADE LAND.
WITH ALL THE NEW BUILDINGS,
MORE THAN 100,000 PEOPLE LIVE
WHERE THE LAKE USED TO BE.

Kyla says SO, COULD YOU SAY THE HARBOUR
COMMISSION FILLED THE HARBOUR?

Wayne says THAT'S EXACTLY WHAT THEY DID.

Kyla says OKAY. I THINK
I KNOW WHAT THIS CLUE MEANS.
THANKS, WAYNE.

Wayne says YOU'RE WELCOME.

Kyla phones Tilly and E.B.

Kyla says I GOT IT. THE BUILDING
ISN'T ON THE LAKE ANYMORE, BUT
THEY DIDN'T MOVE THE BUILDING.
THEY MOVED THE SHORELINE!

E.B. says WHOA, SLOW DOWN, SLOW DOWN...
HOW DO YOU MOVE A SHORELINE?

Kyla says YOU FILL IT! JUST LIKE
HERMIONE SAID. IT'S COOL! EVERY
DAY, PEOPLE WALK AND DRIVE
AROUND DOWNTOWN TORONTO, BUT
THEY NEVER REALLY THINK ABOUT
WHAT THE STREET NAMES REALLY
MEAN. AND WAYNE LET ME OUT
OF THE LATE FEE, THIS TIME.

Tilly says THAT IS COOL.
HERE'S WHAT I "DUG" UP.
MAKING LAND WHERE THERE ISN'T
ANY IS CALLED INFILLING, AND THE
TORONTO HARBOUR IS ONE OF THE
FIRST BIG INFILLING PROJECTS!
MORE THAN 100 YEARS AGO THE
HARBOUR COMMISSION DECIDED
TO MAKE THE HARBOUR DEEPER
SO THAT BIGGER OCEAN-GOING SHIPS
COULD COME TO TORONTO.

E.B. says HOW DID THEY DO THAT?

Tilly clicks and shows black and white pictures of harbors on the computer screen.

Tilly says THEY DREDGED THE HARBOUR.
THEY DUG IT OUT, SO IT WOULD BE
DEEPER. AND IT WAS ALL THE
MATERIAL THAT THEY DUG UP FROM
THE BOTTOM OF THE LAKE THAT THEY
USED TO FILL IN THE HARBOUR. AND
YOU WOULDN'T BELIEVE THE STUFF
THAT'S BURIED UNDER THE STREETS.
OLD DOCKS, FACTORY PARTS,
CARS... JUST LAST YEAR,
THEY DUG UP A SCHOONER!
THE CLUES ARE BEGINNING
TO "FILL" IN.

E.B. says SO FAR, WE HAVE CONSTRUCTION
COMPANIES MAKING FILL AND
TAKING IT TO LANDFILL SITES.

Kyla says AND WE HAVE THE HARBOUR,
WHICH IS MADE BY FILLING IN
PART OF THE LAKE.

"TO FILL OR NOT TO FILL."

Kyla says THAT IS THE QUESTION.

E.B. says ACTUALLY THE QUESTION
RIGHT NOW IS, WHAT DOES ALL THIS
HAVE TO DO WITH BIRD MIGRATION?

Tilly squawks.

Tilly says OH, SORRY! I FOUND
SOMETHING OUT ABOUT THAT, TOO.
I FOUND OUT THAT ALL THOSE BIRDS
CAN BE SEEN IN THE SAME PLACE.
DOWNTOWN TORONTO, BY LAKE
ONTARIO. A PLACE CALLED
THE LESLIE STREET SPIT.

E.B. says THE LESLIE STREET SPIT?

E.B. makes spitting noises.

Tilly says OH, NOT THAT KIND OF
SPIT! A SPIT IS A PIECE OF LAND
THAT STICKS OUT INTO A LAKE.
WHO WANTS TO GO BIRD WATCHING?

E.B. says I'LL GO. I'M ALREADY DOWNTOWN.

Tilly says OKAY, DONE. MY FRIEND
JOHN CARLEY IS AN ARCHITECT,
AND HE KNOWS ALL ABOUT
THE LESLIE STREET SPIT.

The call ends.

E.B. says I'M HERE ON LESLIE
STREET, AND DOWN THERE LOOKS
LIKE THE PART THAT LEADS
INTO THE LAKE. LET'S DO IT!

Sailboats cross a lake on a sunny day. E.B. walks down a path by the lake.

E.B. says WHOA!

John says OH, HELLO! OVER HERE.

John stands looking through binoculars. He’s in his early fifties, with a gray goatee and short hair. He’s wearing a hat, black-rimmed glasses and a white shirt.

E.B. says HI! ARE YOU JOHN?

John says YEAH!

E.B. says HI, I'M E.B. NICE TO MEET YOU.

John says TILLY SAID
YOU WERE INTERESTED IN BIRDS
AND MIGRATION AND...

E.B. says I AM. THIS IS REALLY
IMPRESSIVE. I WOULDN'T THINK
THEY'D BE SO CLOSE TO DOWNTOWN,
YOU KNOW?

Flock of birds stand on a spit of land.

John says WELL! AND THIS SPOT HAS ALMOST
AS MANY SPECIES COME THROUGH IT
AS ANY OTHER PLACE IN CANADA.

E.B. says REALLY?

John says REALLY.

E.B. says SO THEN OUR CLUE HERE
MUST BE THE LIST OF BIRDS?

E.B. hands John the bird migration map.

John says RIGHT. ALL OF
THE 317 SPECIES THAT HAVE BEEN
SPOTTED ARE LISTED, ALONG WITH
THE TIME OF YEAR YOU'D BE MOST
LIKELY TO SPOT THEM HERE.

E.B. says HOW COME THEY
ALL CAME TO THIS ONE SPOT?

John says WELL, THEY ARE
WHAT'S CALLED COLONIAL NESTERS.
THEY LIKE TO NEST IN A COLONY.
3RD LARGEST COLONY IN THE WORLD,
HERE. E.B., SCAN TO THE RIGHT
TO THAT SINGLE TREE, THERE.

E.B. says OKAY.

John says NOW, YOU SEE THE BLACKBIRDS
THERE? THOSE ARE DOUBLE-CRESTED
CORMORANTS. THEY USED TO BE
VERY RARE ON THE GREAT LAKES,
AND NOW WE HAVE ABOUT 12,000
PAIRS HERE AT THE SPIT.

E.B. says YOU KNOW WHAT I THINK IS
AMAZING? THAT ALL OF THE SPECIES
OF BIRDS KEPT FLYING HERE
EVEN AFTER THE CITY WAS BUILT,
YOU KNOW? YOU'D THINK THEY'D
FIND SOMEWHERE MORE PEACEFUL.

John says THEY WEREN'T
COMING HERE, BECAUSE THIS WASN'T
BUILT. WHERE WE'RE STANDING
IS ONLY 50 YEARS OLD.

E.B. says HUH?
IT'S TRUE! CHECK THIS OUT.
THIS IS 65 YEARS AGO.
THERE WAS NO LESLIE SPIT.
HERE'S 48 YEARS AGO, WHEN
CONSTRUCTION WAS JUST STARTED.
HERE'S 16 YEARS AGO.
AND TODAY! AMAZING.

Pictures show the progress of the spit construction.

John says E.B., LET'S GO DOWN
THIS PATH HERE. I WANT TO GET US
CLOSE TO THE WATER'S EDGE.

E.B. says ALRIGHT. LET'S DO IT.

John says JUST WATCH YOUR FOOTING,
HERE, ON ALL THESE SLABS.

E.B. says OKAY. NOW, THIS DOESN'T
LOOK LIKE ROCKS. THIS LOOKS
MORE LIKE CONCRETE BLOCKS AND,
LIKE, PIECES OF SIDEWALK.

John says YOU'RE RIGHT, IT IS.

E.B. says LOOK AT ALL THE PIECES
OF METAL. I WONDER WHAT THAT IS.

John says THAT'S TANGLED
REBAR BROUGHT FROM A
CONSTRUCTION SITE. THIS IS OLD
CONCRETE FROM CONSTRUCTION SITES
IN DOWNTOWN TORONTO. ALL THE
DEMOLISHED BUILDINGS, ALL THE
MATERIAL GOT BROUGHT OUT HERE.

E.B. says WAIT A MINUTE, I THINK I GOT
IT. THE CITY BUILT THIS PARK BY
DUMPING CONSTRUCTION WASTE HERE.

John says YOU'RE RIGHT.
IN 1959 THE HARBOUR COMMISSION
STARTED CREATING THIS BIG
HEADLAND TO MAKE AN OUTER
HARBOUR FOR THE SHIPPING THAT
THEY IMAGINED WOULD OCCUR.

E.B. says BUT THERE'S NO PORT HERE.

John says YOU'RE RIGHT. SHIPPING
CHANGED, AND MONTREAL AND
HALIFAX BECAME THE BIG PORTS.
(SIREN)
AND THIS LAND JUST GOT TAKEN
OVER BY NATURE, AND BECAME
TORONTO'S BIGGEST PUBLIC
URBAN WILDERNESS.

E.B. says SO, THIS WHOLE ENTIRE
PARK WAS MADE BY ACCIDENT?

John says YOU COULD SAY
THAT. THE SEEDS CAME IN,
INTO THE SILT. THE TREES GREW.
EVERYTHING THAT YOU SEE HERE
AROUND US CAME IN BY ACCIDENT.
IT'S A PARK THAT'S STILL
GROWING. IT'S UNDER CHANGE.
THERE'S STILL WORK HAPPENING,
THERE'S STILL DUMPING OCCURRING,
AND THERE'S STILL HABITAT
BEING CREATED.

A truck passes by.

John continues AND THEN OUR
ORGANIZATIONS, FRIENDS OF SPIT,
WAS FORM TO TRY TO, FIRST OF
ALL, GET PEOPLE OUT HERE TO
ENJOY IT.

People jog and ride bicycles.

John continues AND THEN, SECONDLY, TO
PROTECT THIS AS THE WILDERNESS
IT WAS. BECAUSE EVERY NOW AND
AGAIN SOMEONE COMES AROUND WITH
AN IDEA OF HOW TO IMPROVE IT.
BUILD BUILDINGS ON IT, OR THEY
WANTED A CAR PARKING LOT FURTHER
OUT. WE FOUGHT THEM ALL OFF.
EVERYONE LOVES IT THE WAY IT IS.

E.B. says YEAH. YOU KNOW WHAT? FOR THAT,
I THINK YOU DESERVE A HIGH FIVE.

They high-five and John laughs.

Now, they walk towards another spot.

John says HEY, LIONEL.
HOW'S IT GOING?

Lionel is in his thirties. He has a goatee and short black hair. He’s wearing white trousers and a dark long sleeved shirt.

Lionel says HEY, JOHN.
GOOD, HOW ARE YOU DOING?

John says GOOD TO SEE YOU.
LIONEL, THIS IS E.B. E.B.,
LIONEL. LIONEL HAS BEEN INVOLVED
IN DOING ALL OF THIS RESTORATION
WORK HERE AT CELL, TOO.

E.B. says LIONEL SAYS A CELL IS AN
AREA THAT IS COMPLETELY SEALED
OFF FROM THE REST OF THE LAKE.
IT RECEIVES CONTAMINATED
MATERIAL WHICH IS BURIED
AND SEALED UNDER CLEAN FILL
TO PREVENT IT FROM ESCAPING.
THE COOL THING IS THE CELL
EVENTUALLY TRANSFORMS INTO
A BRAND NEW WETLAND HABITAT
WITH TONS OF LIFE!

A bird fishes in the lake.

Lionel says WE'RE GOING TO HAVE
A LOT OF HABITAT FOR SPECIES
LIKE TURTLES, BIRDS, FISH...
YOU NAME IT.

E.B. says THAT SOUNDS AWESOME.
WHAT ABOUT OVER THERE?
YOU KNOW, THAT LOOKS MORE
LIKE A COMPLETE WETLAND.

Lionel says ABSOLUTELY. THAT'S ACTUALLY
CELL 1. WE ACTUALLY COMPLETED
ONE. LET'S GO CHECK IT OUT.

E.B. says ALRIGHT, LET'S SEE.

Lionel says WE ACTUALLY FINISHED
WORKING ON THIS IN 2005.

E.B. says OH.

Lionel says AND AS YOU CAN SEE,
SINCE THAT POINT IT'S GROWN INTO
THIS AMAZING WETLAND. WE'VE GOT
A LOT OF VEGETATION AND WE HAVE
A LOT OF HABITAT THAT'S BEEN
BUILT. WE'VE ACTUALLY BUILT AN
ISLAND OVER THERE. THAT ISLAND
WAS ACTUALLY DESIGNED FOR
TURTLES, SO WE'VE GOT A BEACH
THERE FOR THEM TO COME UP
AND NEST. AND THEN THERE'S
ALSO ALL THESE STRUCTURES.
THERE'S ALL THESE LOGS.
AND THAT GIVES SPOTS FOR BIRDS
TO COME OUT AND PERCH AND FOR
TURTLES TO HAUL OUT AND BASK.

E.B. says SO, EVENTUALLY CELL 2
IS GOING TO LOOK LIKE CELL 1?
SIMILAR, AT LEAST?

Lionel says THAT'S RIGHT. ONCE
IT'S FINISHED, IT'S GOING TO BE
A TOTALLY RESTORED WETLAND,
JUST LIKE THIS.

E.B. says IT'S EASY FOR BIRDS TO
FLY OVER THE CITY AND LAND HERE.
BUT A WHOLE BUNCH OF OTHER
ANIMALS HAVE MANAGED TO TRAVEL
HERE ON FOOT, WHICH ISN'T EASY
WITH ALL THE HIGHWAYS AND THE
DANGERS OF CROSSING HUGE URBAN
AREAS WITH MILLIONS OF PEOPLE!

A clip on the computer shows a wolf, a large rodent, a beaver, followed by a turtle crossing a street.

E.B continues THIS PARK IS NOW THEIR NEW HOME.
YOU KNOW GUYS, THIS IS PRETTY
AWESOME. I MEAN, IT'S GREAT THAT
THERE'S A HABITAT FOR SO MANY
ANIMALS SO CLOSE TO THE CITY,
AND THAT WE CREATED A PARK,
EVEN IF WE DIDN'T MEAN TO.
PRETTY AWESOME.

Lionel says ABSOLUTELY.

John says YOU BET.
IT'S A LITTLE BIT OF PARADISE.

E.B. says WELL, THANK YOU GUYS SO
MUCH FOR MEETING WITH ME TODAY.
I REALLY APPRECIATE IT.
IT HELPED A LOT. IT WAS
NICE MEETING YOU. BYE!

Lionel says NICE MEETING YOU.

John says TAKE CARE.

Back in the house, Tilly and Kyla look at the computer screen. A call comes in.

Tilly says HEY, E.B.

E.B. says HEY, GUYS. I THINK
I FIGURED OUT THIS CLUE. I'M
HEADING BACK TO HEADQUARTERS NOW
SO WE CAN PUT IT ALL TOGETHER.

Tilly says GOT IT!

The call ends.

Kyla says CHECK OUT WHAT I FOUND ONLINE.
A MAP OF TORONTO IN 1860 AND A
RECENT ONE. I CAN'T BELIEVE THE
DIFFERENCE. LOOK AT THIS. A LOT
OF TORONTO ISLAND IS MANMADE.
THE WHOLE AIRPORT IS ON INFILL.

Tilly says AFTER DIGGING INTO THIS
MYSTERY, THAT DOESN'T SURPRISE
ME. THE SAME THING GOES ON
ALL AROUND THE WORLD.
CHECK THIS OUT.
THE ENTIRE SHORELINE OF
MANHATTAN AND NEW YORK IS
MANMADE. OLYMPIC PARK IN SYDNEY
IS BUILT ON TOP OF LANDFILL.
THERE ARE SO MANY PEOPLE LIVING
IN MACAU, ON THE EAST COAST
OF CHINA, THAT WHEN THEY NEEDED
AN AIRPORT, THEY MADE AN ISLAND
TO PUT THE LANDING STRIP ON.
BUT THE WEIRDEST MANMADE LAND
IS DEFINITELY IN DUBAI...
A BUNCH OF MANMADE ISLANDS.

The mouse clicks and pictures of the cities mentioned appear on the screen.

Kyla says HEY, IT'S THE SAME
ISLANDS HERMIONE PLACED IN
THAT CLUE BOX. THEY'RE SHAPED
LIKE A PALM TREE.

Tilly says YEAH. AND LOOK AT THIS ONE.

E.B. walks in.

E.B. says OH!
IS THAT AN ISLAND IN THE SHAPE
OF A MAP OF THE WORLD?

Tilly says YEAH.

E.B. says COOL.

Tilly says IT IS KIND OF COOL TO
LOOK AT, BUT IT'S ALSO REALLY
SAD. WHEN THEY BUILT ALL
THOSE ISLANDS, THEY CHANGED
THE WHOLE ENVIRONMENT.
MOVING THE SAND AROUND MADE THE
WATER CLOUDY, AND THAT KILLED
OFF A WHOLE BUNCH OF SPECIES
THAT DEPENDED ON LIGHT COMING
THROUGH THE NORMALLY CLEAR
WATER.

Dead fish float on water.

Tilly continues BUT FORTUNATELY, SOME
PLACES ARE DOING IT RIGHT.
IN SAN FRANCISCO AND HONG KONG,
THEY HAVE LAWS TO PREVENT
ANY MORE FILLING OF THE HARBOUR
TO PROTECT THE ENVIRONMENT.
SO, TO FILL OR NOT TO FILL?

Kyla says THAT'S A GOOD
QUESTION, BECAUSE...

E.B. says ... SOMETIMES WE GET
LUCKY AND END UP WITH PLACES
LIKE THE LESLIE STREET SPIT...

Kyla says... AND OTHER TIMES WE DESTROY
A BEAUTIFUL, NATURAL PLACE.

E.B. says AND WITH THE AMOUNT OF FILL
HUMANS CREATE, WE BETTER THINK
HARD ABOUT A PLACE TO PUT IT.

Kyla says BEFORE WE CHANGE
OUR ENVIRONMENT, WE NEED
TO ASK OURSELVES...

E.B. says... TO FILL OR NOT TO FILL?

Tilly says SO, THE ANSWER
TO HERMIONE'S QUESTION
WAS TO ASK THE QUESTION!

Kyla says OH...

E.B. nods.

Tilly says OH, WOW! MY MIND IS
BLOWN. I CAN REALLY DIG IT.
YEAH, WE REALLY GOT THE DIRT
ON THIS MYSTERY.
She dances and says THANKS FOR FILLING ME IN.

Kyla says YOU'RE WELCOME.

Kyla and E.B. leave the room.

Tilly says REALLY, TILLY.
PUNS ARE FOR THE BIRDS.

Tilly puts on a feather mask. She squawks and shrieks.

All say MYSTERY SOLVED. POSTING
TO THE
MYSTERY FILES
WEBSITE.

A new video shows the pictures and files recorded and gathered during the episode saved in a box, on a website.

The end credits roll.

An Apartment 11 Production. In association with TVO Kids.

Executive Producers, Patricia Ellington and Marney Malabar.

TVO Kids and Apartment 11 Productions Logos appear.