Gaten Matarazzo made a guest appearance in the popular crime thriller series, The Blacklist. In this show, James Spader stars as Raymond 'Red' Reddington, a former government agent turned high-profile criminal who voluntarily surrenders to the FBI. Matarazzo plays the role of a young boy named Finn, who becomes a key witness in a case that Reddington and the FBI are investigating. The Blacklist is known for its intense and suspenseful plotlines, filled with twists and turns. Matarazzo's performance in this guest role showcases his versatility as an actor and his ability to hold his own alongside seasoned actors like Spader.