Genuinely feel a bit dim for only *now* realizing that when Kate makes all her friends get to safety while she stays behind with a secret self-sacrificing plan to deal with the Cybermen *of course* Tegan can't do it and goes back for her.

Because she can't do that *again.*

#DoctorWho #PowerOfTheDoctor #Tegan #Cybermen #ThirteenthDoctor #Adric #Earthshock