Sleep No More by Greg Iles

John Waters is a happily married man with a growing business and a young daughter he enjoys watching blossom. But John's world begins spinning out of control when a strange woman whispers a short phrase to him that only a long lost love would know. Caught up in a romance John thought he had once before escaped, he puts his family and himself in danger unknowingly. Can he put an end to the madness before his whole world collaspes?