Wealthy writer Stephen Byrne tries to seduce the family maid, but when she resists, he kills her. Long jealous of his brother John, Stephen does his best to pin the blame for the murder on his sibling. Also affected by Stephen's arrogant dementia is his long-suffering wife Marjorie.
| Actor | Role |
|---|---|
 Louis HaywardStephen Byrne | Stephen Byrne |
 Jane WyattMarjorie Byrne | Marjorie Byrne |
 Lee BowmanJohn Byrne | John Byrne |
 Dorothy PatrickEmily Gaunt | Emily Gaunt |
 Ann ShoemakerMrs. Ambrose | Mrs. Ambrose |
 Jody GilbertFlora Bantam - John's housekeeper | Flora Bantam - John's housekeeper |
 Sarah PaddenMrs. Beach - Stephen's elderly cook | Mrs. Beach - Stephen's elderly cook |
 Peter BroccoHarry - coroner chairing inquest | Harry - coroner chairing inquest |
 Howland ChamberlainD.A.-prosecutor at inquest | D.A.-prosecutor at inquest |
| LLeslie KimmellMr. Gaunt | Mr. Gaunt |
| EEffie LairdMrs. Gaunt | Mrs. Gaunt |
 Will WrightInspector Sarten | Inspector Sarten |
 Kathleen FreemanEffie Ferguson - Party Guest | Effie Ferguson - Party Guest |
 Margaret SeddonMrs. Whittaker - Party Guest | Mrs. Whittaker - Party Guest |
 Alex GerryMiller, bookseller | Miller, bookseller |
 Carl SwitzerWalter Herbert, office boy | Walter Herbert, office boy |
| GGeorge TaylorCoroner's Court Clerk | Coroner's Court Clerk |