Peter Harris is the leader of a robbery crew also consisting of Robert Cole and Audrey Hermenez. Harris used door-to-door sales as a cover to scout houses to rob, but Cole was an Iraq War veteran with a head injury, making him unstable. Harris directed Cole to kill fellow homeless veterans David Kriedel and William McCarter to redirect Cole's mental illness and violent episodes.
Harris was offered a plea deal for a reduced prison sentence in exchange for testifying against Cole. (L&O: "Over Here")