Swamp Sister. Robert Edmond Alter

The swamp had no name and no landmarks: just cypress, Spanish moss, and alligators – and a wrecked plane with eighty thousand dollars inside it. The man who found the Money Plane could have any woman he wanted – even the deliriously carnal Dorry Mears – as long as he kept the source of his fortune a secret. But in the swamp no secret was ever safe. And neither was anyone who had Dorry for a mistress.