When a puppy who is being trained as a police dog goes missing, third-grader Judy forms a detective agency to solve the mystery, imitating her literary heroine, Nancy Drew.

Nancy, George, and Bess have been invited to an April Fool's Day party at their new schoolmate's house, with each guest bringing a gag to the party and the best prank winning a special prize. When two of the guests' fancy new electronics go missing, Nancy knows it's no joke, and the Clue Crew are on the case to find the missing gadgets.

While solving the mystery of an old man's disappearing fortune, Nancy ends a family feud and reveals the identity of an orphan of unknown parentage.

When Ned is cast in a stage production of Macbeth, led by the famous but peculiar director Bear Larouche, Nancy volunteers to help with the set. She's also allowed to sit in on a few rehearsals, where she gets an earful from the director about theater superstitions: never say "Macbeth" out loud--only refer to it as "The Scottish Play"--never wear blue, no peacock feathers onstage, and so on. The play is off to a promising start until Ned breaks the...

The Clue Crew is headed to the mall for new school supplies. Right away it looks like the girls have a back-to-school mystery on their hands. Money is missing from the Pencil Box's cash register, and all fingers point to the clerk, Rodger. Nancy doesn't believe he's a thief, but she'll need to examine the facts first--good thing she bought a new notebook!

Nancy arrives in Phoenix, Arizona, eagerly looking forward to a fun-filled vacation at Shadow Ranch but finds herself embroiled in a baffling mystery involving a phantom horse and buried treasure. Local people believe that the ghostly animal is carrying out the curse of Dirk Valentine, the romantic outlaw who was killed many years ago at Shadow Ranch, where he had gone to fulfill a promise to his sweetheart. Suspecting that a treasure hidden by Valentine...

As Thanksgiving food around town starts to disappear, the Clue Crew realizes that someone is trying to destroy the holiday! Read along to see if the Clue Crew can catch these birdbrained bandits, or if Thanksgiving dinner turns into a recipe for disaster.

Nancy Drew must find a man who has been missing for years in order to locate the other half of a treasure map.