From the moment Detective Gavin DeGrassi steps into the world of BDSM to solve the brutal slaying of Dom George Kaiser, his course is not his own. Mesmerized by the context in which the victim lived and the images of the lifestyle seared into his soul, Gavin must find a way to navigate these unknown waters. With his personal life in upheaval due to marital trouble, and his professional life uncertain with the assignment of a new partner, Gavin needs all the help he can get understanding the case. Enter Ben Haverson, a psychologist and a well known Dom. With Ben's help as a consultant and attention to Gavin's own murky truths, Gavin delves deeper than he ever thought he would into the world of restraints and paddles. Forced to scrutinize his true nature and his innermost desires, Gavin has a choice: keep the fear of submitting at bay, or dive in and solve the case with the knowledge he gains. When another victim is discovered, Gavin's choice is made for him, and he's pulled headlong into the deepest, most emotional journey of his life. Unfortunately for him and Ben, a killer has noticed, has taken stock, and has set his sights on the D/s pair. Can Gavin outwit him, or will his first exchange of power be his last?