Central Kansas Library System

When they journey to Alaska to help a friend who feels his life is in danger, the Hardy brothers find their own lives threatened.

The Tower Treasure: After a dying criminal confesses that his loot has been stashed "in the tower," the Hardy boys make an astonishing discovery. The House on the Cliff:When Mr. Hardy disappears while investigating a mystery surrounding a vacant house rumored to be either haunted or an abode for criminals, Joe and Frank search for the truth.

Despite attempts against their life, Frank and Joe accept a case involving the most powerful man in a small town in Georgia and an allegation of piracy and smuggling.

Solve the cases along with the Hardy Boys as they uncover the mysteries and become one of America's favorite detective duos.

A disappearing floor, a savage-looking hound, a galloping ghost and a startling invention are just a few of the strange elements that complicate Frank and Joe's efforts to solve the mystery of the death of an heir to a mansion.

While searching for the guard end of a broken saber that will solve one mystery, the Hardy brothers become involved with a gang of bank robbers.

Their SOS ignored in a storm, the Hardy boys find a wallet containing two thousand dollars alongside their boat and are launched into a mystery involving diverse clues.

An invitation from Cap Bailey, science teacher at Bayport High, to accompany him out West to Wildcat Swamp on an archaeological expedition triggers off a series of dangerous events for Frank and Joe Hardy. On their way West the boys and Cap have a near-fatal accident in a private plane which has been sabotaged. Though warned to leave the area, Frank, Joe, and Cap doggedly remain until they have caught the cunning ex-convicts they are up against in...

In solving the mystery of two medallions missing from an inherited curio collection, the Hardys wind up in a desolate area of Guatemala at the mercy of dangerous thugs.