During its first two seasons, Penny Dreadful on Showtime has taken viewers on a ride that has been as exciting as it is terrifying, with some of literature’s most iconic figures—from Victor Frankenstein and his monster, to Dorian Gray—intertwining with a crew of completely original characters, where evil seems to be lurking around every corner. And one thing is for sure: When evil spreads, dread comes for all of us. 

On May 1, the fascinating, thrilling series returns, with even more mystery and suspense than before. With an all-star cast featuring Josh Hartnett, Timothy Dalton, and Eva Green, the show’s third season promises to be its greatest—and most haunting—yet. You can check out the trailer in the video above, and follow along with the show on Facebook, Twitter, Instagram, and Tumblr. If you haven’t caught up yet, seasons one and two are available for streaming now on the Showtime app. And be sure to tune in to the season 3 premiere of Penny Dreadful Sunday, May 1, at 10 p.m. ET/PT, only on Showtime!