Watch the official promo for a look at Captain Barnes' descent into madness:
, titled " The Executioner ," originally aired on November 14, 2016. This episode is a pivotal moment in the "Mad City" arc, focusing on the mental unraveling of Captain Nathaniel Barnes and the tightening grip of the Court of Owls on the city's future. Watch Gotham s03e09 hdtv x264-lol[eztv]-1