Athena Books, 1961
The blurb on the back:
Paul Lowe got the message when he heard the animal-like noises from beyond the door. He remembered his dancer-girlfriend's fondness for couches and men with imagination. Paul got drunk to forget. But he woke up to brutal murders, a three-quarter million dollar double-cross, a stream of violence and three women who would stop at nothing - absolutely nothing - to get what they wanted.