Ncuti Gatwa's shock regeneration is followed by an even bigger surprise as the show welcomes back a popular star of TARDIS past. BEWARE! Spoilers ahead!

'Doctor Who' finale sees Ncuti Gatwa's 15th Doctor regenerate into a very familiar face, but what does it mean for the show?

Source: space
Source Link: https://www.space.com/entertainment/space-movies-shows/doctor-who-finale-sees-ncuti-gatwas-15th-doctor-regenerate-into-a-very-familiar-face-but-what-does-it-mean-for-the-show