Supernatural was mostly in a state on mourning last Friday, as the first new episode of 2012 dealt with the aftermath of Bobby's death.

This week, meanwhile, will once again find the Winchesters looking back... but in a very different way.

Jason Dohring will guest star on "Time After Time After Time" as, well, the God of Time. He'll send Dean back to 1944, where the brother is promptly arrested by Elliot Ness. Viewers can expect Sam to scramble to get Dean back, only to be surprised when he runs into an old friend. Watch the official CW preview now:

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