Film debut of Skip Homeier.
The play opened on Broadway in New York City, New York, USA on 14 April 1943 and closed 17 June 1944 after 500 performances. The opening night cast included Skip Homeier as Emil and Edit Angold as Frieda, both of whom originated their movie roles in the play, and Ralph Bellamy as Mike Frame, Shirley Booth as Leona Richards and Kathryn Givney as Jessie Frame. Producer Lester Cowan bought the rights to the play for $75,000 plus 25% of the gross, not to exceed $350,000. He wanted to change the title of the movie to "The Intruder," but a poll of exhibitors voted him down.