On Sunday, October 23, BBC One aired Jodie Whittaker's final episode of Doctor Who. The centenary special, which was called The Power of the Doctor, saw Whittaker's incarnation of the Time Lord do battle with the Daleks, Cybermen and her greatest enemy The Master, chillingly played by Sacha Dhawan.
As with other 'regeneration' episodes, the final moments of the feature-length special saw the Doctor mortally wounded and have to change her appearance. The concept of regeneration was first introduced in 1966 and sees the titular character change their face in order for a new actor to take over the part. Since then, there have been 13 (official) actors to play the Doctor with Whittaker being the 13th in the role.
Prior to it airing, viewers had expected to see Whittaker transform into new Doctor Ncuti Gatwa before the episode ended. Little did they know, they were about to be stunned by a shock twist. But who exactly is the new Doctor?