Ghost Whisperer (2005)

S3E2 Don't Try This at Home

Melinda steps in to assist a sorority after a tragic loss leads to the haunting of one of their own. As the spirit of their deceased friend lingers, Melinda faces the challenge of convincing Rachel that she isn’t the vengeful figure known as Bloody Mary. With the girls gripped by fear and uncertainty, Melinda must untangle the mystery of their friend's spirit to bring peace to the living and the departed alike.