The Loop (TV)
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This article or section contains spoilers for unaired episode(s). Read at your own discretion. Once the episode in question has aired, this tag may be removed.
Galaxy Brain is the 12th episode of Season 15. It will air in 2020.
- Jared Padalecki as Sam Winchester
- Jensen Ackles as Dean Winchester
- Misha Collins as Castiel
- Alexander Calvert as Jack Kline
Featured Supernatural BeingsEdit
- Jack Kline and Billie previously appeared in The Trap.
- Jody Mills previously appeared in The Scar.
- Alternate Kaia Nieves previously appeared in The Spear.
- This is the second time Robert Berens and Meredith Glynn collaborated to write an episode with The Future being the first one.
Behind the ScenesEdit
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