Dark Side of the Moon

Summary
''Ambushed by angry hunters, Sam and Dean are shot and killed and sent to Heaven. Castiel warns Dean that Zachariah is looking for them in Heaven so they need to lay low while searching for an angel named Joshua who can help them since he talks directly to God. While searching for Joshua, the brothers run into some old friends and family members.''

Trivia

 * Pamela Barnes has been confirmed to make an appearance in this episode, likely in Heaven.