Mr. O'Halloran is a fictional character portrayed by Duncan McLeod in the TV series Hannibal.
They appear in 1 episodes out of a total of 39 aired
Episodes1
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episode S1.E4 april 2013A series of family murders takes place, and Will determines they were conducted by each of the families' missing children, who were abducted and brainwashed into killing their old families for their "new family." Against Alana's advice, Hannibal checks Abigail out of the hospital for some frightening psychiatric practices that ultimately align her loyalty with him.