In a world where supernatural beings are known and accepted by society… Lieutenant Lacey Anderson of the Dallas Police Department is heading up a new elite squad dedicated to solving crimes involving Immortal species like herself. Lacey, a Vampire left for dead hundreds of years ago when her family was slaughtered by Werewolves, still has nightmares about the grievous ordeal. Detective Colton Scarber is her unwilling partner and second-in-command. He’s a Werewolf, a descendant of those who killed Lacey’s coven mates, a fact unknown to Lacey, who already doesn’t trust him from the start. When the fragile beginning of the team is threatened by the truth, can they learn to trust one another as partners must, or will the Undead Unit be doomed to failure? A mysterious suspect along with strange, unknown physical evidence leads them to solve a case spanning decades, and leaves Lacey with no other choice than to rely on Colton when her very life is in danger!

A rogue Reaper is on the loose in Dallas. Su Xiong is a sociopath with no care for human life. He steals souls whose time is not yet up in order to become a more powerful Immortal. While he’s on the prowl to gain power, his soulless victims roam the streets without morals, without inhibitions, without any code of conduct. Crime rises tenfold: petty wrongdoing, road rage, prostitution, drugs, and drinking. But for each soul he keeps, his own mental stability begins to degrade, a fact that Xiong is dangerously blind to. Can Lacey and Colton, along with Drs. Dilorenzo and Matthews, find him, and stop him, before the insanity inside spoils the souls he holds within?