This is just a mad theory I thought out so it's probably mad. (Excuse the length)
Series 1's main enemy was the Daleks, like the 1st Doctor
Series 2's main enemy was the Cybermen and some Daleks , like the 2nd Doctor
Series 3 The Master like the 3rd Doctor
Series 4 Davros like the 4th Doctor
Series 5 had the return of the Silurians like the 5th Doctors era
Series 6 Was about the Doctor facing death like the 6th Doctors era
Series 7 had the Daleks and Cybermen and the final episode didn't seem so final, like the 7th Doctor era.
The next series is number 8, who was the 8th Doctor's main enemy? The Master.
Series 1's main enemy was the Daleks, like the 1st Doctor
Series 2's main enemy was the Cybermen and some Daleks , like the 2nd Doctor
Series 3 The Master like the 3rd Doctor
Series 4 Davros like the 4th Doctor
Series 5 had the return of the Silurians like the 5th Doctors era
Series 6 Was about the Doctor facing death like the 6th Doctors era
Series 7 had the Daleks and Cybermen and the final episode didn't seem so final, like the 7th Doctor era.
The next series is number 8, who was the 8th Doctor's main enemy? The Master.




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and began with The Next Doctor
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