Ghost Whisperer: Season 1, Episode 3

1 - 3: Ghost, Interrupted

A teenage girl is sent to a psychiatric clinic when her family observes her very odd behavior following the death of her twin sister. During a clinic group outing in town, the girl runs away and hides in Melinda's store, where her twin sister appears and blames Melinda for revealing the girl's whereabouts to clinic authorities. Quickly learning that the girl's unusual behavior is due to the fact that her twin is haunting her, Melinda must help the deceased twin apologize to her sister for her past betrayal so she can move on and her sister will be liberated from the clinic.