A PHOENIX COLD CASE: The desert city of Phoenix, Arizona, has its secrets and its not accustomed to giving them up easily. Ex-cop Mike Peralta and cold case expert David Mapstone have left the law behind and formed a detective agency to unearth them. And it's started badly... THE NIGHT DETECTIVES: Moments after hiring them, their first client is gunned down. And the deaths don't stop there. Someone is killing their customers, killing everyone connected with their cases, and is now coming for them. Why? The answer will lead Mapstone and Peralta into the world of human trafficking, corrupt politics, and the white supremacist movement.