After a dying criminal confesses that his loot has been stashed "in the tower", the Hardy boys make an astonishing discovery.,

The Secret of the Old Mill is an enthralling mystery novel from the beloved Hardy Boys series, penned by Franklin W. Dixon. In this captivating tale, brothers Frank and Joe Hardy, amateur sleuths with a knack for solving crimes, find themselves embroiled in a perplexing case that leads them deep into the heart of an old mill shrouded in secrecy. The adventure begins when the Hardy boys stumble upon a cryptic message hidden in a hollow tree, hinting...

The Missing Chums is a thrilling instalment in the iconic Hardy Boys series, written by Franklin W. Dixon. In this gripping mystery, brothers Frank and Joe Hardy, along with their close friends Chet Morton and Biff Hooper, find themselves entangled in a perplexing case of disappearance and danger. The story unfolds when the Hardy boys' friends, Jerry Gilroy and Phil Cohen, vanish without a trace during a sailing excursion on Barmet Bay. Concerned...

When valuable electronic parts are stolen from shipments made by Stanwide Mining Equipment Company's cargo planes, the boys go undercover as employees to track down the thief.

Teenagers Frank and Joe Hardy are supposedly 'retired' from their detective work. But there is a new mystery in Bayport that needs their investigative expertise - and fast! Starting with a bank heist, a series of alarming pranks have popped up around Bayport. Ultimately harmless, the pranks turn out to be the work of Seth Diller, an amateur filmmaker who plans to make 'zillions' from his reality-horror flick, which he'll use to help out his brother,...

First published in 1928, now public domain in the USA and Canada, The Missing Chums is the fourth book in the Hardy Boys series. Follow Frank and Joe Hardy as they grapple with the unexplained disappearance of their closest friends, Chet and Biff, during a motorboat trip. The stakes are high, as Baldy Turk's gang think they've kidnapped Frank and Joe and, in a letter received by the Hardy Boys' Aunt Gertrude, are demanding ransom for their return....

The Tower Treasure is the first volume in the original The Hardy Boys Mystery Stories published by Grosset & Dunlap. The book ranks 55th on Publishers Weekly's All-Time Bestselling Children's Book List for the United States, with 2,209,774 copies sold as of 2001. (Source: Wikipedia)

Joe and Frank Hardy are attending the season's opening night at Funspot, a local amusement park that's been declining for years, but that recently got new owners and a facelift. Their friend Daisy's family has everything riding on Funspot's success: If the revamped park is a failure, her family will be broke! At first, an exhilarating new attraction is a huge hit - but when one of the riders disappears into thin air, fun and games turns into spine-tingling...

Brother detectives Frank and Joe find themselves on the basketball court and in the midst of a dangerous team initiation scheme in this thrilling Hardy Boys adventure. Joe and Frank are taken aback when Principal Gerther announces that they need more extracurriculars on their school transcript, and he's signed them up for the basketball team. They think it's odd because they both stink at basketball! But the Hardys soon find out that their principal...

When the daughter of an amusement-park owner goes missing, it's anything but fun and games in this Hardy Boys adventure - a new take on the classic series. Daisy Rodriguez is missing. Just like that, gone without a trace. Her father, Hector Rodriguez - owner of Funspot, Bayport's local amusement park - is frantic. He feels he's to blame, since Funspot was recently the location of another disappearance. Could Daisy's vanishing be somehow connected?...