For the original edition of this book, see The Clue of the Broken Blade (original text).

The Clue of the Broken Blade is the 21st book in The Hardy Boys series. It was first published in 1942 by Grosset & Dunlap and revised and re-published in 1970.

Plot summary

Frank and Joe Hardy become involved in an intriguing mystery which revolves around their fencing master, Ettore Russo. Proof that Russo is the rightful heir to his grandfather's estate hinges on retrieving the guard end of a broken saber lost many years ago in California.

The young investigators' quest is complicated by a bank robbery during which some of their father's important records are stolen. Using Mr. Hardy's recently purchased scientific device, a sound spectrograph, the boys identify the voiceprints of the leader of the masked robbers. A chase ensues that takes Frank, Joe, and their pal Chet Morton to the grape-growing region of California and involves them in a dangerous game of hide-and-seek with the bank robbery gang, who also are searching from the broken saber.

A startling discovery at a movie location leads to the solution of this thrilling, fast-paced mystery.


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