Hannibal is an American psychological horror–thriller television series developed by Bryan Fuller for NBC. The series is based on characters and elements appearing in Thomas Harris' novels Red Dragon and Hannibal, with focus on the relationship between FBI special investigator Will Graham (Hugh Dancy) and Dr. Hannibal Lecter (Mads Mikkelsen), a forensic psychiatrist destined to become Graham's most cunning enemy and at the same time, the only person who can understand him.
The series received a 13-episode order for its first season and, unlike most U.S. network shows, all future seasons would 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, which premiered on June 4, 2015. On June 22, 2015, NBC canceled Hannibal after three seasons because of low ratings. The series finale aired in Canada on City, on August 27, 2015, and aired two days later in the U.S. on NBC.