A young treasure diving couple is sadistically murdered in the back country of the Florida Keys—and Jesse McDermitt’s friend is the prime suspect. – The reclusive federal agent and former combat Marine launches his own investigation in the face of overwhelming evidence. McDermitt is certain of his friend’s innocence. – When a third victim’s body is discovered lodged among the mangrove roots on Knockemdown Key, the race to stop a serial killer begins. The beautiful Detective Devon Evans will do anything to apprehend the killer before he claims another victim. – With shifting political winds, McDermitt and his friends must improvise and adapt to the ever-changing tide. There’s more than meets the eye in this tenth novel in the Jesse McDermitt series!