And that is how you wrap up a season! In its season 1 finale, The Winchesters brought back a few familiar faces, answered a lot of questions, and gave fans a sense of closure (and hope for the future) as John (Drake Rodger) and Mary (Meg Donnelly) defeated the Akrida and closed a chapter of their lives.

In the hour, which featured returns from Supernatural's Bobby (Jim Beaver), Jack (Alexander Calvert), and Dean (Jensen Ackles), the show answered the biggest question surrounding the series: Where does this story take place in the larger Supernatural timeline? As Dean explains in the episode, he was in heaven, taking that long drive while he waited for his brother to join him, when he got caught on a bit of a detour.

That detour took him to an alternate universe, one where he hopes the Winchesters might have a shot at a happy ending. (He even gives this John and Mary his hunting journal and the Colt in the hopes that he'll help them achieve it.)

EW spoke with Winchesters showrunner Robbie Thompson about crafting a finale that could serve as the series' end if the show is not renewed, but also one that opens up many doors for the Supernatural universe.

ENTERTAINMENT WEEKLY: Well, thanks for the reminder that I'm not emotionally stable, because the moment Dean said "Sam," I started crying.

ROBBIE THOMPSON: You and me both! I got teary-eyed writing it, but then on the day, that one got me.

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