The Sign of the Crooked Arrow is the twenty-eighth volume in the original The Hardy Boys series of mystery books for children and teens published by Grosset & Dunlap.
This book was written for the Stratemeyer Syndicate by Andrew E. Svenson in 1949. Between 1959 and 1973, the first 38 volumes of this series were systematically revised as part of a project directed by Harriet Adams, Edward Stratemeyer's daughter. The original version of this book was shortened in 1970 by Priscilla Baker-Carr,