The clip shows Tony award winner Patti LuPone, seen recently in American Horror Story, returning to the show as a series regular in the role of Dr. Seward. Wes Studi will also appear as a new regular as Kaetenay.
The teaser shows Eva Green's character Vanessa Ives reminding herself she's been "touched by Satan," while a clip of a bloody love scene rushes across the screen. Soon after, her lover Ethan Chandler (Hartnett) is heard saying "I am made for the dark," as he seems to have resumed the hunting of evil.
Penny Dreadful returns to Showtime May 1 at 10 p.m.