富有的作家斯蒂芬·拜恩试图引诱女佣，但当她反抗时，他杀死了她。斯蒂芬长期嫉妒他的兄弟约翰，他尽力把谋杀的责任归咎于他的兄弟。同样受到斯蒂芬傲慢痴呆症影响的还有他长期受苦的妻子玛乔丽。
Louis Hayward
Stephen Byrne
Jane Wyatt
Marjorie Byrne
Lee Bowman
John Byrne
Dorothy Patrick
Emily Gaunt
Ann Shoemaker
Mrs. Ambrose
Jody Gilbert
Flora Bantam - John's housekeeper
Sarah Padden
Mrs. Beach - Stephen's elderly cook
Peter Brocco
Harry - coroner chairing inquest
Howland Chamberlain
D.A.-prosecutor at inquest
Leslie Kimmell
Mr. Gaunt
Effie Laird
Mrs. Gaunt
Will Wright
Inspector Sarten
Kathleen Freeman
Effie Ferguson - Party Guest
Margaret Seddon
Mrs. Whittaker - Party Guest
