This document provides a summary of key characters and plot points from the TV show Supernatural based on information seen on social media: Dean Winchester hunts demons and monsters with his brother Sam. Dean drives a black Impala and has been to hell. Sam is tall with long hair and cannot have happiness. Castiel is an angel who pulled Dean from hell and has feelings for Dean. Many characters including Sam, Dean, and Adam have been to hell. Lights seen falling from the sky are believed to be angels. The show focuses on the brothers dealing with supernatural threats and tragedy with no happiness.