Franklin W. Dixon

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...

Timber wolves, a rocky Mountain blizzard, and a mine cave-in are only a few of the perils Frank and Joe Hardy encounter during their search for the notorious gang responsible for a payroll robbery.

Frank and Joe Hardy look for clues in this perplexing mystery.

First a priceless painting disappears from the museum; then two ancient samurai swords vanish from a private collection. A string of robberies has hit Bayport, and all signs point to the Phantom, a recently released ex-con who last struck more than twenty years ago. There's only one problem: the Phantom has vanished into thin air, and not even Frank and Joe Hardy can track him down. Then the boys begin receiving threatening notes in the mail, each...

While attending an amusement park under the new ownership of their friend Daisy, Joe and Frank investigate the disappearance of a patron who was last seen riding a hit attraction, an event that has threatened Daisy's family's livelihood.

Joe and Frank investigate some pranks around Bayport, leading them to the Red Arrow, a crime grang.

The Hardy boys travel to the Deep South to vindicate a long-dead Confederate general, disgraced during the Civil War because he was accused of stealing hidden gold belonging to a bank.

When they are invited to spend Christmas vacation at the private island retreat of wealthy Elroy Jefferson, the Hardy boys become involved in two mysteries: the disappearance of Mr. Jefferson's grandson and the theft of a priceless collection of antique medals.

Frank and Joe, the Hardy boys, solve a mystery involving a magician, American secret agents, and international spy ring, and a Scottish castle.