While trying to help a friend out of a difficulty, teenage detective Nancy Drew has a perilous experience in and around a deserted bungalow.

Leroy Brown, better known to all as Encyclopedia Brown, is the ten-year-old son of the police chief of Idaville. Whenever Mr. Brown has a particularly difficult case, he brings it home for his son to deal with.

"A year after the Bayview four were cleared of Simon Kelleher's death, a new mystery has cropped up--a game with dangerous consequences that's targeting students at Bayview again. And if the creator isn't found soon, dangerous could prove deadly"--

When she notices some bones missing from a dinosaur skeleton exhibited in the museum, a young girl with a photographic memory tries to discover who has been taking them and why.

Nancy investigates sabotage at the local pharmacy when two customers fall ill and a third dies.

A young girl living on an Iowa farm finds a mysterious pony's skeleton locked in an abandoned shed and tries to discover where it came from.

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.

Encyclopedia is back with his partner, Sally Kimball. They'll have to face Bugs Meany, who's up to his old tricks, and Wilford Wiggins, who's still dreaming up new schemes to trick the kids of Idaville out of their money.

A top computer game creator is missing and Frank and Joe must find him soon.