Murder by Invitation is a 1941 American mystery film directed by Phil Rosen and starring Wallace Ford, Marian Marsh and Sarah Padden.
The relatives of Cassandra "Cassie" Denham, an old unmarried lady living in New York who is reputedly good for three million dollars, try to make a judge declare her unable to take care of herself financially.
Instead he summons a newspaper reporter, Bob White (Wallace Ford), and his girlfriend, Nora O'Brien (Marian Marsh), and tells them he has been invited to stay a week at Cassie's estate up in the mountains.
Cassie asks Eddie to guard a small box with her valuables, offering him $10,000 to do so, and says she suspects her neighbor, Trowbridge Montrose, of being involved in the killings.
When the house is in flames, Mary suddenly panics and angrily confronts her employer, stating that she should have the money for working for her for several years and tolerating her imperiousness, saying she was entitled to inherit something, and hysterically admits committing the murders, implicating also her accomplice, Michael, the chauffeur, whom she has secretly married.