The Big Caper is a 1957 flick about Frank Harper (Rory Calhoun), a gangster facing heavy debt. Down on his luck, he devises a clever plan, or what he thinks is clever. His plan is to move to a small town to rob a bank. He chooses a particular bank because it holds lots of cash on hand to pay the local military personnel. He receives funds from his boss, Flood (James Gregory), to start the job, and pretends to be married to his boss's daughter Kay (Mary Costa) upon arrival in the town. The couple gains the locals' trust, and are almost ready to pull off the incredible heist when they have a change of heart. They second guess the entire operation even though Frank needs the money, and knows his boss will not be happy. Directed by Robert Stevens, the film is based on Lionel White's novel of the same name.