After a series of vampire-style murders are committed in Los Angeles, investigator Mick St. John begins to search for those behind the deaths. While doing so, Mick reconnects with Internet reporter Beth Turner, a woman from his past.
A murderer from Mick's past is released from prison, forcing Mick to deal with one of his worst fears -- his immorality being revealed to Beth.
Beth, struggling after learning Mick's identity, helps him track a renegade vampire who cannot control his urge to kill.
Mick helps protect a young woman who is wanted by an arms dealer but when they become stranded in the desert, Mick becomes the one who desperately needs help to survive.
Mick hunts for a young vampire who is preying on females he locates via the Internet. Meanwhile, Mick and Beth go to lengths to avoid each other after an intimate encounter.
Mick and Beth work together again to find a vampire from Josef's past who may be linked to a drug overdose they're investigating.
Mick has flashbacks to the night when Coraline died while investigating a fire that destroyed a Hollywood hotel. Mick becomes even more wrapped up in the past when the woman he works the case with has a close resemblance to his ex-wife.
Mick protects a woman from a killer's followers after the followers swear to follow out their leader's last wish -- to kill those responsible for his execution.
Mick begins working closely with a photographer, much to Beth's dismay. Jealous, Beth looks into the photographer's background, and is shocked by what she finds.
When a hit is put out on Josef by a dying man that has a vendetta with him, Mick finds out things Josef has been keeping from him for over 40 years, also the reason why he believes Mick and Beth can never have a relationship.
Josh is working on the biggest case of his career, a conviction against a member of the MS-13 gang, possibly the most dangerous gang in the world. In an attempt to force Josh to drop the case, the gang threatens Beth, but Josh refuses to fold and enlists Mick’s help in protecting her. Unfortunately, Josh is left unguarded and is kidnapped with devastating results. Beth discovers an unwanted blood connection.
Mick's desire to become human may be realized when he discovers Coraline's secret, but answers come with a costly price. Meanwhile, Beth has to deal with bad news alone.
Beth is kidnapped by a murder suspect, forcing Mick to debate whether or not becoming human again is a sacrifice worth making in order to save her life.
A Hollywood starlet is murdered after hiring Mick as a part of her security team, thinking that her life was in danger by the paparazzi. Meanwhile, Beth's ethics are questioned.
Beth is given more information about Mick's secretive past after the grandson of Mick's World War II friend is kidnapped.
Mick and Beth must face mortality and immortality when a vampire kills a human during the heat of passion. But when the investigation threatens to identify all those with vampire identities, Mick and Josef must take action.