When William Gridley arrives from the US in London, he rents part of Carly Hardwicke's house from her and promptly begins to fall in love       Gridley doesn't know that many people think she killed her husband but his boss, the American ambassador, knows and doesn't take this lapse of judgement lightly       Since Carly is also American, Gridley saves his job by 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 they'll help him       And then the comedic complications really begin