Good Neighbor Sam

To help his divorced neighbor claim a substantial inheritance, the married man next door poses as her husband. The ruse spills over into his advertising job where his recent promotion requires maintaining a conservative, moral appearance.

Good Neighbor Sam is a 1964 comedy movie directed by David Swift, starring Jack Lemmon, Romy Schneider, Mike Connors. It holds an IMDb rating of 6.7/10 from 3,554 votes and runs 2h 10m.