Supernatural aired a classic episode on Friday, an all-time great and definitely the best of season seven.

How will The CW favorite follow-up?

With "Repo Man," which features the return of Mark Pellegrino as Lucifer and which takes the brothers back four years to a case they thought they solved. It involves a demon and postal worker named Jeffrey, who now resides in a psych ward. Dean and Sam will pay him a visit on the episode.

Get your first look at what's to come now via the following preview and sneak peek:

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