When William Gridley arrives from the US in London, he rents part of Carly Hardwickes house from her and promptly begins to fall in love. Gridley doesnt know that many people think she killed her husband but his boss, the American ambassador, knows and doesnt take this lapse of judgement lightly. Since Carly is also American, Gridley saves his job introducing her to the ambassador, who is promptly smitten and promises to help her. So when a Scotland Yard detective arrives, wanting to get to the truth one way or another, they say theyll help him. And then the comedic complications really begin.