Medium

Season 1, Episode 15

Episode Title: Penny for Your Thoughts

Air Date: 2005-05-09

Overview:

Allison encounters a psychopathic doctor who raped and murdered numerous teenage girls years ago. After learning that an evil soul has been possessing people, she sets forth to stop it before a new victim is found. Meanwhile, Ariel's math teacher accuses her of cheating and Joe steps up to her defense.