On a balmy, late summer morning in Hilden Heights, Hattie Baker is found dead in her pool, and she wasn't the first. A socialite and successful business owner, Hattie was an excellent swimmer. Even so, her death was ruled an accident. Her boyfriend, Mason Willis, however, doesn't believe it was an accident. He thinks she was murdered and goes to Harry Starke for help. Thus begins an investigation that almost costs Harry his life.

Can Harry find the killer before they strike again?