Meet FBI Agents Emma Monroe and Zack Armstrong. She's cursed. He's damned. Together, they make one hell of a team. Emma Monroe is a Siren, cursed by the gods and bound to earth to atone for an ancient failure. She’s had many names and many lives, but only one mission: redemption. Now that she works missing persons cases for the FBI, it could be just a rescue away. Unless her new partner leads her astray. Special Agent Zack Armstrong just transferred into the San Diego Field Office. He’s a werewolf, doing his best to beat back the demons from his dark and dangerous past. As a former Black Ops sniper, he’s taken enough lives. Now he’s doing penance by saving them. Emma and Zack’s very first case draws them deep into the realm of the paranormal, and forces them to use their own supernatural abilities. But that leaves each of them vulnerable, and there are lines partners should not cross. As secrets are revealed and more women go missing, one thing becomes clear: as they race to save the victims, Emma and Zack risk losing themselves.

Join FBI Agents Emma Monroe and Zack Armstrong. She’s a Siren. He’s a Werewolf. Their mission is redemption. Emma Monroe is a Fallen Siren, cursed by the gods and banished to Earth for her failure to prevent the kidnapping of Persephone. She’s had many names and many lives, but only one mission: redemption. Now she works for the FBI and is on temporary assignment in Charleston. Solving this next missing persons case could be the key to ending her ancient curse—unless the temptation that’s her new partner gets in the way. Zack Armstrong is a Werewolf. Tall, dark, and dangerous, he currently works for one of the bureau’s elite Child Abduction Rapid Deployment teams. In many respects the man is every bit as mysterious as his secret and perilous past. But there are two things he’s certain about, that he’s going to get his man and his woman. When Zack finds himself suddenly shy a partner and a third child goes missing in Charleston, Emma goes from consultant to CARD team member in the space of a few hours. The abductions of the first two boys ended in murder, an outcome that neither Zack nor Emma can abide. As they race against time to track down the kidnapper and rescue the latest victim, they find themselves fighting something just as treacherous—a growing attraction that can’t be ignored or denied.