Eileen Mazwell

Eileen Mazwell is a one-shot villainess from the third season of Psych. She appeared in the 2nd episode, "Murder?... Anyone?... Anyone?... Bueller?"

She was played by Serinda Swan, who also appeared as Ashley Frank/Veritas on Supernatural.

Eileen Mazwell is the wife of star high school football player Howie Tolkin, and both were part of the school graduating class of 1995. Days before their high school graduation, Howie was the driver in a hit-and-run accident, which put a man in a coma for seven months before succumbing to his injuries. Eileen and another classmate, Peter Colter, were the passengers, and Peter--looking to create a memorable moment, took the rap for Howie, as he could have lost his scholarship.

In the years that passed, Eileen and Howie married, and the latter (as Eileen boasted to Shawn and Jules) was running for state assembly. Meanwhile, Peter moved away and never recovered from the incident, committing petty crimes since then. Eileen was confronted by Peter a month prior to the episode's events at the reunion, and hoping to keep him quiet, she filed a restraining order. At the reunion, Peter confronted the couple once again at the roof of the school, threatening to tell everything, and it was at that moment that the couple killed him, doing so by pushing him off the roof. Throughout the reunion, Eileen helped Howie cover up the murder, placing Peter's body inside the girls' locker room--dressed in a mascot uniform.

Eileen's reveal came when she and Howie were crowned queen and king, which was followed by Shawn giving a summation of their crime. The couple was arrested for Peter's murder.