Working on his uncle's farm in the fall, Flat Stanley searches for answers when pumpkins start to disappear right before the county fair.

Marty Frye, a seven-year-old who likes to read poetry and talk in rhymes, solves three separate mysteries for a classmate, a toy store owner, and his younger sister.

Jigsaw Jones finds himself in competition with Reggie for the title of the best detective in town. Reggie relies on technology and charm to solve mysteries. Can Jigsaw prove that he is better?

"Someone is secretly renovating the basketball court at the local park, and Zach and Zoe are determined to find out who"--

When his goat assistant is arrested for stealing the golden pickle paperweight, a mystery-solving Venus flytrap is determined to find the real thief. Inspector Flytrap is a Venus flytrap who solves mysteries! Nina is a goat, and Inspector Flytrap's trusty assistant. Follow along as they solve a train robbery, sneak into a dog show, and capture a master criminal!

Zach and Zoe join the Middletown Elementary lacrosse club. But a day after their first game, a mystery presents itself: the netting on one of the school's lacrosse sticks is torn through. Ms. Moriarty says the equipment is just old and worn, but the twins think it might be something else. They decide to investigate, and when the clues start coming together, they realize solving the mystery is only the first piece of an even bigger surprise.

"Zach and Zoe find their recess football deflated from a hole near the laces, and set off in search of clues to discover how it happened"--

Ten-year-old Cam, possessor of a photographic memory, and her friend Eric investigate what seems to be a brief appearance of U.F.O.s.

When upper case letters disappear from Capital City, Question Mark calls on Private I to investigate.

Dink, Josh, and Ruth Rose are enjoying Halloween fun in Sleepy Hollow, New York, but when unplanned spooky things start happening, they investigate whether a real headless horseman might be to blame.