After the deaths of his parents and having to raise his younger brother, Detective Ronan Callaghan looks for three things-a good time, his next case, and when time allows, the man who murdered his family. The jury is still out on his new partner, but the hot new medical examiner at the first crime scene they share does it for him hands down. Diego Nieves hopes his new job in Boston will allow him to shake the painful memories of an on-duty shooting. Haunted by the event, he takes his job seriously and isn't certain he can work with a cavalier partner. He sure as hell wants to work more closely with the pretty ME standing over his first homicide vic. Newly free from a long and boring engagement, medical examiner Cassidy Barnes is finally free to cut loose with her sex life. She's determined to break old patterns and start taking new chances. When two sexy cops catch her eye, she can't resist either-the charming rogue or the serious romantic. Just when Ronan and Diego begin to click as partners, their simultaneous relationship with Cassidy pits them as rivals. As each man vies for her attention, Cassidy struggles to choose between them. Solving the case and keeping Cassidy just might mean Ronan and Diego must to learn to work together...in more ways than one.