The Final Game (unproduced TV story)

✅ The Final Game was an unproduced serial intended to end Season 11. It would have revealed that the Third Doctor and the Master were actually brothers, explaining why the Master never sought to actually kill the Doctor. It would have ended with the Master sacrificing his life for the Doctor, followed by the Doctor regenerating. However, the episode was never produced due to the death of Roger Delgado (the Master) and Planet of the Spiders replaced this story as the final episode for Jon Pertwee (Third Doctor).