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Richard Armitage is trading hobbits for “Hannibal,” joining the NBC drama for a six-episode arc in its upcoming third season.

“The Hobbit” star will play Francis Dolarhyde, a serial killer with a penchant for biting his victims — earning him the nickname “The Tooth Fairy.” Dolarhyde was the primary antagonist in Thomas Harris’ “Red Dragon” novel and subsequent film adaptations “Manhunter” and “Red Dragon,” which featured Tom Noonan and Ralph Fiennes in the role, respectively. Armitage is expected to debut in episode eight.

Also joining the “Hannibal” cast in season three is Joe Anderson, who will be replacing Michael Pitt in the role of Mason Verger. Recurring guest star Gillian Anderson has been promoted to series regular for the new season.

Armitage’s casting was first reported by Variety sister site TVLine.