Join Frank and Joe Hardy on their very first mystery adventure in The Tower Treasure! When a daring robbery leaves their friend’s family in dire straits, the Hardy boys take it upon themselves to uncover the truth and clear his name. Their search leads them to hidden clues, suspicious characters, and a mysterious old tower that holds secrets of its own.

Frank and Joe Hardy drive to the to see the new Bayport Airport. Before even getting there the boys are almost run over by an airplane flown by the airmail pilot Giles Ducroy. As a result of the event, Ducroy loses his job, blames the boys, and then frames them for a mail robbery. Although the boys don’t have an alibi they are bailed out of jail by Mr. Applegate (from The Tower Treasure) and Mr. Jefferson (from The Mystery of Cabin Island). The Hardy boys overhear Ducroy and two other criminals planning a major robbery.

Something is not right in Bayport. After a series of unfortunate (yet harmless) pranks, it looks like Frank and Joe have caught their suspect surprisingly early. Their classmate, Seth Diller, has taken his love of filmmaking a bit too far. But shortly after Frank and Joe confront Seth, there are fresh outbreaks of Seth-like pranks. Except these aren't as harmless. After a bit of investigating, the Hardy Boys uncover evidence of the Red Arrow - a group that will stop at nothing to bring chaos and crime to Bayport's peaceful existence.

Dear Diary...Bess, George, and I are actually in Alaska! Everywhere you look, there are massive mountains and sparkling, deep-blue waters. We're on the maiden voyage of the Arctic Star luxury cruise ship, and my old friend, Becca Wright, the assistant cruise director, needs our help. She received threatening emails before even setting sail; then a bloody body turned up in the swimming pool.

This bundle includes Peril at Granite Peak and The Battle of Bayport.