Originally Posted by
ChrisIII
Kind of curious how Pertwee's last season (Which some consider to be his weakest, despite Sarah Jane) would've been with Delgado. Apparently Pertwee's last story was intended to reveal that the Master was the Doctor's dark side, and the two would have some sort of Sherlock Holmes/Moriarty final conflict with the Doctor regenerating after the fact.
Which are two things we kind of got eventually with the Valeyard and the Master being involved at least in part with several of the regenerations (4, 7, 10 and 12's).