In The Big Caper, a 1957 picture I saw on Tubi, a conning couple pose as husband and wife while aiming to participate with their associates in a bank heist. The make-believe family, however, grows dysfunctional. For one thing, posing as an uncle, Zimmer, a bomb expert, is the thirstiest alcoholic on the planet.
James Gregory is an intelligent actor here in the role of a mob boss. With a cool head he means business. Directed by Robert Stevens, Caper is never less than interesting and involving. All the same, as an actor Rory Calhoun (the phony husband, Frank) keeps threatening to do a disappearing act.