William Campbell Gault - Square in the Middle

First published by Random House (hardback) in 1955. This first paperback edition published by Bantam (1602) in May 1957.

Back cover synopsis: "She was sitting at the bar, and I could tell she was the kind of woman a married man shouldn't look at - even once.
But I thought I was safe enough - until the third martini. Then all of a sudden my wife and kids seemed very far away.
When I woke up the next morning, I had a large hangover, the scent of the girl's perfume in my nose, and a murder rap around my neck.
And I couldn't remember anything that had happened...except her."