Season 1 Episodes
1. The Big Apple Mystery / The Missing Pickle Car Mystery
A giant wooden apple on the fruit store sign falls off and the gang investigates to know where it went. / Mr. Frumble's newly painted Pickle Car goes missing and Huckle is on the case.
2. The Mystery Wheel / Busytown Blue-Bottoms
Huckle, Lowly, and Sally discover a missing wheel by the roadside. / The Busytown citizens find blue paint on their clothes, so Huckle sets out to find the bench in need of a "wet paint" sign.
3. The Mystery of the Lost Parrot / The Monster Mystery
Huckle and Lowly reunite a lost parrot with no owner. / Sally is convinced there's a monster loose in Busytown.
4. The Trouble with Bubbles / Little Orphan Egg
Busytown cars start blowing bubbles after a double at the gas pumps. Huckle and the gang soon realize that bubble bath soap was pumped into the gas station tank on accident. / Huckle, Lowly, and Sally discover an abandoned egg in the park, so they search for a nest that has similar-looking eggs.
5. The Lighthouse Ghost Mystery / Cornfield Confusion
Hilda Hippo thinks she sees a ghost in the lighthouse, so Huckle goes to investigate to prove that there's no such thing as ghosts. / A sign leading citizens to a corn stand suddenly swings upside down and points the wrong direction.
6. The Sticky Stuff Mystery / Up, Up and Away
Busytown citizens get their feet stuck in purple goo. / When the kids help decorate used cars for Jack's big sale, Pig Won't and a bunch of helium balloons disappear.
7. Six Little Muffins / The Crashing Cans Mystery
Hilda invites the gang over for muffins, but the muffins suddenly disappear and the gang tries to figure out why. / Huckle and the gang try to determine why someone is knocking over stacks of cans in Mr. Cat's shop.
8. The Invisible Cake Snatcher / On the Move
Huckle, Lowly and Sally's science cake project vanishes from inside a locked room. / Huckle helps Sally track down her missing scooter.
9. Litterbug Busters / There Might Be Giants
Using clues found from the litter, Huckle hunts down a litterbug. / Pig Will and Pig Won't are convinced that giant robots are invading Busytown, so the gang tries to investigate.
10. Where's Junior? / The Secret Club Mystery
When Junior Monkey goes missing, Huckle and the gang are saddled with his little sister while trying to solve the mystery. / The Pig Brothers refuse to let their friends join their secret club.
11. The Playground Mystery / The Crazy Clock Mix-Up Mystery
When the playground items go missing, the gang is convinced that it must be the work of the Playground Grabber. / While the gang is at Mr. Fix-It's shop to have his portable video game repaired, they are surprised when the clocks suddenly go crazy, causing confusion.
12. The Cheese Car Chomp Mystery / Where's the Hero?
Something or someone takes a big bite out of the Mouse family's cheese car and Huckle and the gang investigate. / Huckle and his friends search for the mysterious hero who rescued Granny Goat from the train tracks.
13. The Mystery of the Unbreakable Bread / The Twisty Line Mystery
Huckle, Lowly and Sally are determined who find out why every loaf of bread in Busytown is as hard as concrete. / The center line of the road suddenly goes twisty, causing drivers to veer off the road.
14. Chain of Mysteries / The Mystery of the Unfinished Painting
Huckle and the gang realize objects like the teeter-totter are chained up, so they get to the bottom of the mystery. / On a windy day, Huckle and his friends find an unfinished portrait and use clues to return it.
15. The Pretty Park Mystery / The Missing Museum Statue Mystery
Artistically trimmed bushes that resemble Busytown pedestrians mysteriously appear in the park. / Vincent Van Goat's statue made out of butter disappears from the Busytown Museum.
16. The Vanishing Tiara Mystery / The Postage Stamp Mystery
Belinda Bear's good luck tiara disappears, so Huckle and the gang search for clues. / Huckle and his pals help Mr. Frumble find his prized butterfly stamp.
17. The Bank Note Mystery / The Flying Saucer Mystery
When the gang discovers a bank note, the Pig Brothers think that the note is from bank robbers. / Huckle and his friends realize that Goldbug, who reports on Huckle's mysteries, is absent while the kids try to solve the mystery of a flying saucer.
18. The Mystery Present / The Smudged Letter Mystery
Huckle, Lowly, Sally and Hilda finds a wrapped gift without a name tag. / The gang helps Postman Pig deliver a letter with a smudged address.
19. The Falling Fruit Mystery / The Dragon Hunters
One of the cherry tree's in Patrick Pig's orchard mysteriously drops all over its fruit, so Huckle and the gang investigate. / The Pig Brothers think that a dragon is on the loose.
20. The Disappearing Swimming Hole / The Forgotten Fire Hose Mystery
When they find his friends swimming hole empty, Huckle, Lowly and Sally set out to find out where the water went. / When the gang learns about a report of a giant snake that is at the park, they rush to the fire department, but the firefighters can't go anywhere until they retrieve their missing hose.
21. The Disappearing Home Mystery / The Flipping, Flying, Slipping, Sliding Mystery
Everything in the Raccoon family's house disappears. / Huckle and his pals try to figure out why metal objects are flying around Busytown.
22. The Mystery of the Unpopular Pizzeria / The Silly Scarecrow Mystery
The Busytown's popular pizzeria closes due to a sudden lack of business and the gang tries to figure out why. / Pig Will and Pig Won't are convinced that Farmer Pig's scarecrow is out to get them after finding corn straw on the bedroom floor.
23. Huckle, Where's My Apple Car? / The Dirty Laundry Mystery
Lowly joins Huckle and Sally in the orchard to pick apples for Granny Goat. / Huckle, Lowly and Sally try to figure out the strange clothing stains on Mrs. Murphy's line.
24. The Eight Shoes Mystery / The Something in the Woods Mystery
Shoemaker Sam comes across a bag containing eight shoes to be repaired and a note to return them in time for an upcoming concert. Both items are mysterious, so the gang searches for clues. / When the gang goes camping, they hear strange noises.
25. The Borrowed Book Mystery / The Mystery of the Missing Mystery Books
Sally needs to find a book at the library about trees for a book report, only to find the book overdue, and the gang tries to figure out who checked it out. / A shipment of Martha Mystery books goes missing and Huckle and the gang are set to find a box labeled "MM".
26. The Mystery of the High Jumper / The Mystery of the Summer Snowman
Someone who can jump higher than a house puts advertising stickers on everything, which doesn't please the Busytown pedestrians. / A snowman appears on a summer day. He doesn't melt, so Huckle and friends try to find out why.