The Undead Unit series: A hundred years in the future, it’s a world where supernatural beings live among humans. Of course, they’re forced to take the Undead Oath; they must not prey on humans for food. Just as with other minorities, they battle prejudice and must struggle to prove themselves. Alongside the humans’ bigotry is a criminal element, as seen in any group in society. The Dallas Police Department sets up an elite new squad of Immortal detectives and officers, dedicated to solving crimes among the Undead. Headed by veteran Lacey Anderson, can the Undead Unit overcome its obstacles, or is it doomed to failure?

A rogue Reaper is on the loose in the city of Dallas. Su Xiong is a sociopath with no care for human life. He steals souls whose numbers are 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 or social mores. Crime has risen tenfold: petty crime, road rage, prostitution, drinking, and gambling. But for each soul that he captures and keeps, his own mental stability behind to degrade, a fact that Xiong is dangerously blind to.

Can Lacey and Colton, along with Doctors Matthews and Dilorenzo, find him, and stop him, before the insanity inside spoils the souls he holds within?