A young heiress finds evidence suggesting that at night she acts under the influence of a family curse and has begun committing ghastly murders in a nearby park.
| Actor | Role |
|---|---|
 Don PorterBarry Lanfield | Barry Lanfield |
 June LockhartPhyllis Allenby | Phyllis Allenby |
 Sara HadenMartha Winthrop | Martha Winthrop |
 Jan WileyCarol Winthrop | Carol Winthrop |
 Lloyd CorriganDetective Latham | Detective Latham |
 Dennis HoeyInspector Pierce | Inspector Pierce |
 Martin KosleckDwight Severn | Dwight Severn |
 Eily MalyonHannah, the Housekeeper | Hannah, the Housekeeper |
 Frederick WorlockPark Patrol Constable-in-Charge Ernie Hobbs | Park Patrol Constable-in-Charge Ernie Hobbs |
 Clara BlandickMrs. McBroom (uncredited) | Mrs. McBroom (uncredited) |
 James FinlaysonConstable (uncredited) | Constable (uncredited) |
 Olaf HyttenConstable Alfred (uncredited) | Constable Alfred (uncredited) |
| WWarren JacksonConstable (uncredited) | Constable (uncredited) |
 William H. O'BrienConstable (uncredited) | Constable (uncredited) |
| BBrick SullivanConstable (uncredited) | Constable (uncredited) |
| DDavid ThursbyConstable Herbert (uncredited) | Constable Herbert (uncredited) |
| JJoan WellsPhyllis, as a child (uncredited) | Phyllis, as a child (uncredited) |