Uh-oh! The latest Once Upon a Time sneak peek released for “The Doctor” sets up a horror movie-style episode as Whale reanimates the dead.

ABC has made it very obvious that Whale is indeed Once Upon a Time‘s version of Frankenstein, and if anyone had any doubt left after the promo, this sneak peek is sure to convince you!

In the clip, Regina enters the hospital to find the lights flickering ominously, and several hands lying about (we hate to think what fairytale characters they belonged to). She then finds Doctor Whale on the ground, clearly injured, and we really hope this doesn’t mean that the show is killing him off!

Whale explains to a horror-struck Regina that he has brought Daniel back to life, taking his body and one of her hearts – but what he has actually created is, in his own words, “a monster.”

There is a fair chance that this is a dream sequence (probably Regina’s), considering that Daniel’s body would presumably be long gone by the time the characters arrive in Storybrooke, and that it wouldn’t be that easy for Whale to get one of her hearts. The episode description also says that Regina is haunted by a ghost from her past, not a physical being.

Or maybe we’re just in denial about Doctor Whale dying! We’ll let you decide: real or not real?

Once Upon a Time‘s scary Halloween-themed episode “The Doctor” airs Sunday at 8/7c on ABC. Also check out the sneak peeks released earlier today, featuring Whale and David, and Captain Hook and the girls.