|First Appearance||"Fools For Love"|
Peter Williams was a suspect in two murders. He persuaded his girlfriend, Laura Kendrick, to "give" him her younger sister and one of her friends to kill. He was arrested, and Laura testified against him as part of a plea bargain; unbeknownst to both of them, however, Jack McCoy was using them to manipulate the judge into rejecting the plea and punishing them both. Peter was then sentenced to death and executed, whilst Laura is serving her sentence in prison for accessory to the murders. (L&O: "Fools For Love")
He is based on serial killer Paul Bernardo.