This Is My Night, by Richard Deming (epub/Kindle/pdf)
Casey Denver, soldier of fortune, is back from helping Castro win his revolution, and he knows a secret. A Group of Batista bandits are hiding out with four million dollars stolen from the Cuban treasury. Casey wants that four million, and three beautiful women are willing to help him get it. Diane -- uninhibited and untamed, who doesn't want money but definitely wants a man...any man. Magdalena -- calculating but far from cold, who also wants a man...the one who ends up with the four million dollars. And Marie, lush and lonely, who only wants Casey Denver...with or without the money! A classic crime novel.