Flanagan, 49, will start shooting for 'Revenge' after 'Sons of Anarchy's' final season bows in a few weeks, reported E! Online.
Flanagan will recur as one of this season's biggest villains yet. He will play the powerful and dangerous Malcolm Black, a 'high-functioning psychopath' who knows how to hold a grudge.
Described as self-made, cold and calculating, Malcolm is relentless when it comes to protecting both his family and his fortune, and he will be introduced in episode 11, the show's midseason premiere.
His first episode of Revenge debuts in early 2015.