The Sinister Signpost

The Sinister Signpost
Original edition
AuthorFranklin W. Dixon
Original titleThe Sinister Sign Post
Cover artistJ. Clemens Gretta
LanguageEnglish
SeriesThe Hardy Boys
GenreDetective, mystery
PublisherGrosset & Dunlap
Publication date
September 1, 1936, revised edition 1968
Publication placeUnited States
Media typePrint (hardback & paperback)
Pages192 pp
ISBN0-448-08915-7
Preceded byThe Hidden Harbor Mystery 
Followed byA Figure in Hiding 

The Sinister Sign Post (later retitled The Sinister Signpost ) is Volume 15 in the original The Hardy Boys Mystery Stories published by Grosset & Dunlap.

This book was written for the Stratemeyer Syndicate by Leslie McFarlane in 1936. 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 rewritten in 1968 by Tom Mulvey resulting in two different stories with the same title.