Twisty road lines create a traffic problem.
The Big Apple Mystery
The Missing Pickle Car Mystery
The Mystery Wheel
Busytown Blue-Bottoms
The Mystery of the Lost Parrot
The Monster Mystery
The Trouble with Bubbles
Little Orphan Egg
The Lighthouse Ghost Mystery
Cornfield Confusion
The Sticky Stuff Mystery
Up, Up and Away
Six Little Muffins
The Crashing Cans Mystery
The Invisible Cake Snatcher
On the Move
Litterbug Busters
There Might Be Giants
Where's Junior?
The Secret Club Mystery
The Playground Mystery
The Crazy Clock Mix-Up Mystery
The Cheese Car Chomp Mystery
Where's the Hero?
The Mystery of the Unbreakable Bread
The Twisty Line Mystery
Chain of Mysteries
The Mystery of the Unfinished Painting
The Pretty Park Mystery
The Missing Museum Statue Mystery
The Vanishing Tiara Mystery
The Postage Stamp Mystery
The Bank Note Mystery
The Flying Saucer Mystery
The Smudged Letter Mystery
The Mystery Present
The Falling Fruit Mystery
The Dragon Hunters
The Disappearing Swimming Hole
The Forgotten Fire Hose Mystery
The Disappearing Home Mystery
The Flipping, Flying, Slipping, Sliding Mystery
The Mystery of the Unpopular Pizzeria
The Silly Scarecrow Mystery
Huckle, Where's My Apple Car?
The Dirty Laundry Mystery
The Eight Shoes Mystery
The Something in the Woods Mystery
The Borrowed Book Mystery
The Mystery of the Missing Mystery Books
The Mystery of the High Jumper
The Mystery of the Summer Snowman