Brian Kelly plays the captain of a charter boat, and a year later he'd remain near the water as the star of the television series Flipper (1964), for which he's still best known.
Director Jack Leewood was usually a producer of low budget films. This was one of two movies he directed. Both were crime films starring Gene Nelson, a villain in this and the hero in 20,000 Eyes.
Gene Nelson started out as a movie dancer, then became a leading man in Film Noir and B-Westerns, and villains as well. During this time, though, he was mainly a director of television shows and a few features.
Co-writer Don Devlin remained in partnership with Jack Nicholson, later producing The Fortune and The Witches of Eastwick, both starring Nicholson.