Matthias is tranquil, drained of emotion and color. Frank is crass, boisterous, and as full of life as he was before the turning. One is a vampire without a past, and the other wishes he could forget his.
Both are assigned to a strange murder case and must bring one of their own to justice in order to preserve the peace between the ruling corporations and the vampire council. But when their investigation raises more questions than they answer, the two are enlisted to retrieve a valuable corporate asset; a young mage named Sandra who has escaped from the university where the gifted are imprisoned.
As the body count rises, Frank and Matthias are forced to confront both a towering system of corruption and their own selfish natures. Polar opposites, the nocturnals must overcome their differences to survive the blistering light and the engulfing night.