NBC's latest trailer for the upcoming series Hannibal, debuting Thursday, April 4 at 10 PM ET with "Aperitif", showcases Hugh Dancy as FBI "special investigator" Will Graham. We see his unique process as he examines a crime scene and gets inside the mind of a serial killer known as "The Ripper." His gift comes at a price, though, since he is clearly quite tormented. Enter Dr. Hannibal Lecter (Mads Mikkelsen), a renowned psychiatrist who tries to help Will with his issues, and the case at hand. Check out the latest gruesome, blood-splattering footage before watching all the Season 1 action next month.