Peyton and Marco have the best crime-solve statistics in the Homicide Division, but that accolade might be in jeopardy when a football player is murdered on Halloween. The suspects look like a line-up for the Village a clown, a cowboy, and a police officer. Can they solve the case before the assailants remove their masks and go back to their 9 to 5 jobs? A Peyton Brooks Homicide follows San Francisco's dynamic crime-fighting duo, Peyton Brooks and Marco D'Angelo, through their early cases in the Homicide Division.