Good Neighbor Sam (1964)

In order to help his wife's (Dorothy Provine) best friend (Romy Schneider) receive an inheritance from her grandfather's will, an advertising executive (Jack Lemmon) pretends to be her husband. The will specifies that she must be married or lose the inheritance. Things get complicated when greedy relatives (Anne Seymour, Charles Lane) hire a private detective (Louis Nye) to keep an eye on the woman's activities and when the real husband (Mike Connors) shows up, things get really messy. Based on the novel by Jack Finney (INVASION OF THE BODY SNATCHERS) and directed by David Swift (THE PARENT TRAP). This comedic farce would have benefited from some editing shears as it runs past the two hour mark and the material has exhausted itself by then. It's formulaic but there's still a bit of charm to the proceedings. Lemmon hadn't yet resorted to the sometimes over the top hysteria which marred many of his later performances, he's still a wonderful light comic actor here. Fluff but engaging nonetheless. With Edward G. Robinson's as a conservative right wing client of Lemmon's, Edward Andrews, Joyce Jameson and Linda Watkins.