We have seen shows with multiple versions fo the Doctor before but Episode 11 gives us multiple Masters. In the World Enough and Time, Missy (Michelle Gomez) and the Master (John Simm) feature in this iconic image that is reminiscent of Doctor Who – 50th Anniversary special – The Day of the Doctor.
The last time we saw John Simm’s Master, the Tenth Doctor (David Tennant) regenerated. Could it be that it will take a Master and a Mistress to defeat the Twelfth Doctor (Peter Capaldi)?

We will all have to wait and see as World Enough and Time, the first part of the two-part finale of Peter Capaldi’s last series as the Doctor airs. BTW there are also Cybermen — Mondasian Cybermen.
Watch the start of Series 10’s finale as The Doctor (Peter Capaldi), Bill Potts (Pearl Mackie) and Nardole (Matt Lucas) band together for one last adventure.
The last two episodes start with World Enough and Time, at 6:45 pm on Saturday 24 June on BBC One and concludes on Saturday 1 July with The Doctor Falls – an extended, 60-minute episode.
If you missed any of Doctor Who series 10, the full series is available on BBC iPlayer.