It is 1946 and Frank O'Brian is a gumshoe in New York, in other words a Private Investigator. Having just qualified as a lawyer when the US entered WWII, he quit to work as a field agent for the Office of Strategic Services in Europe. On returning to New York he found the notion of returning to the law too tame and hung up his PI shingle. In his first big case he is involved in murder, blackmail and double dealing. As with Henke's other work the twists and turns continue right up to the end. This is the pilot in the Gumshoe mystery series of novellas.
An easy read. A woman being blackmailed is arrested on charges or murdering her blackmailer. But did she do it? She says no. Her lawyer believes her, but her husband doesn't. This book also explains why the lawyer joined the army during the war shortly after he got disillusioned with his job. It's like having two very short stories combined into one short story. Interesting.