',Thirty-seven years in the force, and if I was allowed to choose just one thing to erase from my mind, what's inside that room would be it.' That's what a LAPD Lieutenant tells Detectives Hunter and Garcia of the Ultra Violent Crimes Unit as they arrive at one of the most shocking crime scenes they have ever attended. In a completely unexpected turn of events, the detectives find themselves joining forces with the FBI to track down a serial killer whose hunting ground sees no borders, a psycho ...