Cat lady Henrietta Winslow (Cecilia Loftus) lives in what looks like a haunted house. But that’s where he family must go to hear the reading of her will. She plans on leaving half of her money to her niece Myrna (Gladys Cooper),  the other half to her granddaughter Margaret (Claire Dodd) and the estate to her granddaughter Elaine (Anne Gwynne).  Meanwhile, Myrna’s husband Montague (Basil Rathbone) has invited realtor Gil Smith (Broderick Crawford) and antiques dealer Mr. Penny (Hugh Herbert) to help him creak up the estate.

Smith saves Henrietta’s life by keeping her from poisoned milk — this has already been added to my poisoned milk Letterboxd list — but she’s later killed when she is cremated one of her murdered cats. Her money is not to be given to anyone until her faithful maid Abigail dies (Gale Sondergaard) and she tries to throw everyone out, but they won’t leave.

Meanwhile, Montague’s son Richard (Alan Ladd) catches his father with Margaret and threatens to tell Myrna, just in time for Abigail to be murdered. The killer is using secret tunnels in the house to pull off their scheme, but one of the surviving black cats solves the case by setting them on fire.

An attempt to cash in on the success of The Cat and the Canary, this was directed by Albert S. Rogell. The original script by Eric Taylor and Robert Neville was rewritten by Robert Lees and Frederic I. Rinaldo.