Seven Keys To Baldpate

George M Cohan stars in the 1917 film of his play based on the often filmed Earl Derr Biggers novel.
Seven Keys to Baldpate is a 1917 American silent mystery/thriller film produced by George M. Cohan and distributed by Artcraft Pictures, an affiliate of Paramount.[1] The film is based on Cohan's play of the novel by Earl Derr Biggers. Cohan himself stars in this silent version along with Anna Q. Nilsson and Hedda Hopper, billed under her real name Elda Furry. One version of the play preceded this movie in 1916 and numerous versions followed in the succeeding decades such as the early RKO talkie starring Richard Dix.[2]
Seven Keys to Baldpate is an extant film with much home video availability.