The Sister of Cain

Mary Collins (1908-1979) was born in St. Louis and studied at Miss Burke's School in San Francisco and the University of California. After selling a few short stories to the magazine The Passing Show, Collins took to writing novels. During her short writing career she authored six mysteries from 1941 through 1949. In 2024, Stark House Press began reprinting her books with Only the Good. A year later the publisher has reprinted The Sister of Cain, complete with the original artwork. It is available in both physical and digital editions with an introduction by the always informative Curtis Evans.

Young Hilda is experiencing some domestic changes in her life. She and her husband are expecting their first child. However, David is away serving the U.S. Navy during WW2. In his absence he has urged Hilda to travel to San Francisco to stay with his family in their large house. David's parents are deceased but he has five sisters and they all live together. But, not happily ever after.

After meeting the family's grumpy housekeeper, Hilda meets with the oldest sister, Pauline. She is firmly etched into the family dynamic as the overseer of the family trust and the smothering motherly figure for the four women. During a turbulent dinner it is revealed that Pauline is forbidding one of them from dating a local druggist. After a few days Hilda discovers that Pauline has also placed unnecessary obstacles to block other sisters from marrying, gaining employment, and even dating. 

When Pauline's body is found in her bedroom with a knife in the back the narrative begins a slow character study and analysis of the many motives and suspects. Beyond just the sisters presence there's also the housekeeper and the family friend. The only male character is the homicide detective Cassidy, who soon joins with Hilda to learn who the killer is. The author explains the pairing by elaborating that the police force is severely understaffed.

Collins' The Sister of Cain is a tight suspense thriller that works like any traditional murder mystery. Each suspect is carefully considered and the obligatory secrets are answered that delve into the family's murky past. I never became bored with the plotting and found it affected me in the same fashion as Margaret Miller's excellent The Iron Gates, published in 1948 and two years after Collins' novel. Both books examine young women with emotional distress and mental health issues. The sleuth in that book, Inspector Sands, is similar to Cassidy in this novel. Both are open to the investigation and never paint themselves into a corner with a quick judgment. 

Overbearing family members living in the same dwelling makes for excellent storytelling even without the murder. With a corpse (or three) readers will find the plot development, characterization, and pacing a perfect balance for this 200-page whodunit. The Sister of Cain is recommended. Get it HERE.