The Final Game (unproduced TV story)

The Final Game was an unproduced serial due to end Season 11. It would reveal that the Doctor and the Master are actually two aspects of the same Time Lord and would end with the Master sacrificing his life for the Doctor with rumours suggest that the story would have revealed the Master as either the evil side of the Doctor's personality or his brother, explaining why the Master never sought to actually kill the Doctor. However, the episode was never produced due to the tragic death of Roger Delgado (the Master) and Planet of the Spiders replaced this story as the final episode for Jon Pertwee (the Doctor).

Notes

• A reference much later in The Sound of Drums when Martha Jones tells the Tenth Doctor she thought he and the Master were brothers with the Doctor dismissively replies "You watch too much TV".

• Over thirty years later, the idea for this episode would be reused in The End of Time with the Tenth Doctor and the Master wondering they'd be like without each other and the Master sacrificing himself to save the Tenth Doctor from Rassilon.