Read the description for the upcoming Fringe episode “Five-Twenty-Ten,” in which an old character resurfaces! Beware of spoilers.

Fox has released the following description:

GAME-CHANGING FRINGE EVENTS OCCUR ON AN ALL-NEW “FRINGE” FRIDAY, NOVEMBER 16, ON FOX

As the fight for the future intensifies, a member of the Fringe team orchestrates a Fringe event of his own in the all-new “Five-Twenty-Ten” episode of FRINGE airing Friday, Nov. 16 (9:00-10:00 PM ET/PT). (FR-507) (TV-14 L)

Cast: Anna Torv as Olivia Dunham; Joshua Jackson as Peter Bishop; John Noble as Walter Bishop; Lance Reddick as Phillip Broyles; Blair Brown as Nina Sharp; Jasika Nicole as Astrid Farnsworth

Guest Cast: Georgina Haig as Henrietta/Etta

Are you surprised that Georgina Haig will be returning as Etta? If you missed it, her character was killed off during the last episode of the show, and the promo for Friday’s episode “An Origin Story” shows Peter and Olivia desperate with grief over the loss.

Yet only two episodes later, Etta is set to return. Will she appear in a flashback, or will we in fact learn that she did not die after all? This is what many fans already believe, but that might just be wishful thinking. We’ll have to wait and see!

Fringe 5×05 “An Origin Story” airs Friday at 9/8c on Fox.