Supernatural will get a blast from the past when Kate the werewolf returns.

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Kate (Brit Sheridan) first appeared in season 8's found footage episode, "Bitten." The Winchesters allowed the college student to live, but their momentary act of kindness will come back to bite them - possibly literally - during "Paper Moon."

When Sam and Dean get pack to their monster of the week format in episode 4, a rash of werewolf attacks will grab their attention. A photo of Sheridan covered in blood doesn't bode well for the seemingly innocent Kate.

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Will the brothers be ready to dispatch this new threat, or will some form of sentiment hold them back. Sam and Dean have let other werewolves live in the past, Garth for instance, and their recent dalliance with their evil sides may leave the Winchesters feeling a little more friendly than usual.

The episode is penned by Adam Glass ("Mother's Little Helper," "Sharp Teeth") and directed by Jeannot Szwarc.

Find out more when Supernatural airs Tuesdays at 9 p.m. ET on The CW. Click the video below to see a preview for the series next episode.

Tags: supernatural television the cw