Bet on the Saint is the title of an unpublished novel by Fleming Lee (credited to Leslie Charteris), featuring the character of criminal-turned-detective Simon Templar (alias "The Saint"), created by Charteris in 1928. The novel was written in 1968. Charteris had effectively retired from writing the stories in 1963, and served in an editorial capacity overseeing a new series of Saint novels and novellas by other writers. To date, this "lost" Saint novel remains unpublished and a copy of the manuscript is kept with a collection of Charteris' papers at Boston University.