Detective Book Club edition contains three complete 1949 novels.

The Hangman's Tree by Dorothy Cameron Disney:
Dr. Victoria Grant travels to Charleston for the annual Azalea Festival and ends up investigating the tragic death five years previously of her best friend's husband's first wife. Four gentlemen from some of Charleston's finest families eventually confess, but Dr. Grant must determine whether they confessed out of gallantry or guilt. (WorldCat)

Dig Me Later by Miriam-Ann Hagen:
After Hortense Clinton gets involved in the murder of a man next door, she retreats to a lodge in Nova Scotia. There - hoping to find anonymity - she is surrounded with the attentions of two inseparable boys, a dubious doctor, an insurance agent, and a man she disliked. As various attempts are made on her life, another dies in her stead. (Kirkus Reviews)

The Leather Duke by Frank Gruber:
A book in the Johnny Fletcher, P.I. series
Circumstances beyond their control (and for once, beyond their ability to twist, sidestep, or disregard) force Johnny Fletcher and Sam Cragg to take jobs. They become the employees of "the Leather Duke", Chicago's biggest operator in the leather business. But before they've been there half a day, Sam finds a corpse. Then the uproar begins. Whether they're fighting in poolrooms, mixing it up at dances, or merely adding to their well-developed art of deadbeating, these two lads are at it every minute. (Publisher)