Dylan O'Brien was seriously injured in a stunt accident in March 2016 while filming "Maze Runner: The Death Cure." During the stunt, he was pulled off one moving vehicle by a harness that was too short and then struck by another vehicle. This caused him to suffer a severe concussion, brain trauma, and multiple fractures on the right side of his face, requiring extensive facial reconstruction surgery. The accident was life-changing, leading to a long recovery period and a temporary break from acting. O'Brien later opened up about the trauma and the safety concerns he had raised before the incident, which were not heeded by the production team. He emphasized the importance of standing his ground on set to protect himself, a lesson learned the hard way from his near-fatal accident.
Before the accident, O'Brien was actively filming and physically engaged in performing dangerous stunts. After the accident, he went through a difficult recovery both physically and mentally, including moments of doubt about continuing his career. His recovery was slow, requiring surgery and months away from work, but he eventually returned to acting with a new perspective on personal safety in the industry.