The Audrey Hepburn, Cary Grant combo sizzle in this comic mystery. Regina (Audrey Hepburn) on a holiday plans to divorce her husband, only to find out that he is murdered. But before she could claim any inheritance she discovers that he died with a secret. He stole a fortune which is now been sought after by a few accomplice in the erstwhile crime. Regina meets Peter Joshua (Cary Grant) who frequently changes identity but is trying to help Regina. Both fall in love but are caught in the line of fire as the mystery heightens with people being killed.