After a number of 30-second teasers, Showtime has released the first full-length trailer for their upcoming series Penny Dreadful. The series is set in 1890s Victorian London, where a host of iconic horror characters such as Dorian Grey, Frankenstein's monster and Dracula come together. Check out this new footage featuring stars Josh Hartnett, Eva Green, Timothy Dalton, Harry Treadaway and Reeve Carney, before the series premiere airs Sunday, May 11 on Showtime.