When the past haunts the future, a vampire's life is at stake... After watching the agonizing death of a family member, Sami Karim's need to flee her empty home overwhelms her. When she's invited into the clandestine organization of Operation Underworld, she readily accepts the offer. To her utter shock and dismay, she finds Connor Dickson, the man she deceived in order to further her own agenda. Forced to work together to stop a vampire drug dealer whose product is killing humans, Sami and Connor agree to keep their relationship professional, but she can't dismiss the deep attraction she still holds for him. As someone from Sami's past enters their world, she realizes that those from her former life could very well get her and Connor killed ... and it will be up to her to save both of them.