Hannibal is an American psychological thriller–horror television series developed by Bryan Fuller for NBC. The series is based on characters and elements appearing in the novel Red Dragon by Thomas Harris and focuses on the budding relationship between FBI special investigator Will Graham and Dr. Hannibal Lecter, a forensic psychiatrist destined to become Graham's most cunning enemy.
The series received a 13-episode order for its first season and, unlike most U.S. network shows, all future seasons will feature 13 episodes. David Slade executive produced and directed the first episode. The series premiered on NBC on April 4, 2013. On May 9, 2014, NBC renewed Hannibal for a third season, to premiere in summer 2015.