During a taping of "The Tonight Show", 'Jack Lemmon' told this story. Prior to filming How to Murder Your Wife, co-star Virna Lisi's husband made her promise that she would not be talked into doing a nude scene in her first American film. She assured him that she would not, signed the contract and traveled to Hollywood. While filming the 'revelation' scene, where Lemmon awakes to discover in horror that he got married at the bachelor party, Virna had to disrobe and lay in the bed nude but discreetly covered with a bedsheet. However, it was this day that her husband, an architect, arrived unannounced at the set to surprise his wife. When he walked into the scene, he became very upset. He focused his anger toward her co-star. Lemmon, realizing that discretion was the better part of valor, exited the set at full run with Virna's husband in tow. Running past several sound stages on the MGM lot, he quickly found a garbage dumpster, jumped in and closed the cover. He waited there until security officers found him.
In the Italian version Virna Lisi's character is Greek.
Last feature of Leonard Mudie.
Stanley's wife is referred to as "Mrs. Ford" throughout the whole film. Her first name is not mentioned once.