The Dolores Mystery. Nocturne, directed by Edwin L. Marin and featuring a screenplay by Jonathan Latimer based on a story by Roland Brown and Frank Fenton, includes performances by George Raft, Lynn Bari, Virginia Huston, Joseph Pevney, Myrna Dell, and Edward Ashley. Leigh Harline provided the music, with cinematography by Harry J. Wild. Following the discovery of Hollywood composer Keith Vincent’s (Ashley) dea…