Are You There, God? It's Me, Dean Winchester (S04E02)

Sam and Dean are stunned when the spirits of Meg (recurring guest star Nikki Aycox) and Agent Henricksen appear and accuse the Winchesters of failing them. Although rattled, the brothers must pull together to save Bobby (recurring guest star Jim Beaver), who is too crippled with guilt to fight off the angry ghosts of the young children he couldn't save. (Warner Bros. UK)