Supernatural

Season 5, Episode 11

Episode Title: Sam, Interrupted

Air Date: 2010-01-21

Overview:

A former hunter named Martin, who is currently institutionalized, calls Sam and Dean for help investigating a case in the mental hospital. The brothers get themselves admitted as patients to check out the mysterious monster that is attacking the patients, but their incarceration pushes both to the breaking point as they unleash their inner demons against each other.