"Does your past define you forever? That's the question LAPD homicide detective Niels Madsen must answer after he gets in the middle of a standoff between two uniformed officers and Cisco, an intellectually disabled man. Cisco is found armed and standing over the body of a man with Down syndrome. Cisco swears the dead man was his good friend, and he didn't hurt him, but in his earlier life, Cisco had been a gang member, a brilliant and brutal killer....