Tommy Flanagan of Sons of Anarchy fame will be joining the cast of Gotham as one of the most dangerous hitmen to walk the city’s streets, going by the alias of “Knife.” Described as charming, stylish, and remorseless, he’ll be the kind of guy who lures you into a nice conversation followed by a violent, efficient kill. Flanagan seems like a pretty apt choice to add to the cast of Gotham as it continues to smoothly move through its second season. His first appearance will be the 10th episode of the season, presumably followed by more.