To Catch a Thief was "strong on sight and performance values" though it had "some plot weaknesses and is not as smooth in the unfolding as one might expect from an upper 'A' presentation." "Harrison's Reports" wrote, "Alfred Hitchcock has not endowed the action with as much suspense as one might expect in a picture produced and directed by him; nevertheless, its story of a one-time jewel robber who sets out to establish his innocence by catching a thief who was using his technique is tight and swiftly-paced, and constantly offers dramatic and comical developments." Richard L. Coe of "The Washington Post" called it
Once a Thief (1965 film) Can Win", a big hit for Delon. "Once a Thief" was based on Marko's novel "Scratch a Thief"; this was his first screenplay. Marko had a small role in the film and spent time in jail on criminal charges during the shoot. A. H. Weiler of "The New York Times" thought that the film was not as good as similar genre pictures, but praised its dialogue for its accuracy in portraying the gangster's speak. The film was not a success at the box office. Once a Thief (1965 film) Once a Thief is a 1965 crime film directed by Ralph