The Third-Grade Detectives are looking forward to their field trip to a local art museum, where a priceless fifteenth-century statue of Joan of Arc is on loan from a Paris museum. But they discover the statue has been stolen. The police find the statue smashed and thrown in a Dumpster. It looks like a case for the Third Grade Detectives even if the museum director doesn't want their help.

Dink Duncan and his two friends investigate the apparent kidnapping of famous mystery author Wallis Wallace.

The mysterious disappearance of a reclusive neighbor's cat involves the Boxcar children in some complicated detective work.

Nate the Great investigates two cases that may be connected, involving a missing valentine and a valentine that came from nowhere.

Third-grader Dink and his detective friends hope to receive a big reward by finding the person whose video recorder picked up a picture of the local bank robber.

Assisted by his dog Sludge, Nate the Great, boy detective, agrees to find his friend Claude's lost grocery list before lunch.

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.

Nate the Great goes to San Francisco to solve a mystery with his cousin, Olivia Sharp, who is also a detective.

Nate the Great investigates the mysterious disappearance of the purple plastic octopus that his baseball team uses for second base.

Dink and his friends investigate why pets, like Mrs. Davis's canary, Mozart, are mysteriously disappearing all over town.