Teenage detectives Frank and Joe Hardy investigate a supposedly haunted house reported to be the hangout of criminals.

Alice's father is dead and everyone believes her guilty of his murder.

Teenage detectives Frank and Joe Hardy investigate a case of counterfeiting.

MISSION: To investigate the shady goings-on at the exclusive private boarding school Willis Firth Academy. LOCATION: The mountains of New England. POTENTIAL VICTIMS: The brothers of Gamma Theta Theta, the most elite fraternity on campus, seem to be on the receiving end of all of Firth's biggest (and most dangerous) problems. SUSPECTS: The members of the frat may seem like brothers to everyone else, but Gamma Theta Theta insiders know that within...

When Cam's grandparents are robbed on their way to her parents' surprise birthday party, Cam uses her photographic memory to solve the mystery.

The Alden children are searching for a rare comic book of their favorite superhero, Captain Fantastic. They finally find the comic and something else, too--a strange note inside, signed by the comics creator. The Aldens realize the note is a fake.

When Dr. Charles Coote--a noted folklorist and old friend of Professor Childermass--returns from a conference in New Orleans, he brings home a small, sinister drum. It's made entirely of black wood with red leather straps and small, white bones. Nobody takes Dr. Coote's worries about the drum very seriously, until Fergie taps it a few times and releases an unspeakable evil. Suddenly, Johnny and Fergie and the professor find themselves battling the...

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.

Living with his grandparents gives Johnny Dixon a lot of time to find trouble. Or adventure. Or is it both? In this, the first Johnny Dixon mystery, our young hero hears the spinetingling story of Father Baart, a madman who haunts the town's church. At first, Johnny does not believe in ghosts, but when he takes a scroll and a small Egyptian figurine from the church basement, all that changes. Soon, a mysterious stranger gives him a ring, and Johnny...

The town's ten-year-old walking encyclopedia again solves ten neighborhood mysteries. The final solutions to the cases are at the back of the book, giving the reader a chance to compare his skill to that of Encyclopedia Brown.