The A-Z of Classic Who | Mawdryn Undead: A Visitor's Guide to the End of the Piccadilly Line October 19, 2020 Brigadier Lethbridge-Stewart +3 Classic Doctor Who Doctor Who Doctor Who (1963-1989) Fifth Doctor Mawdryn Undead Brigadier Lethbridge-Stewart Classic Doctor Who Doctor Who Doctor Who (1963-1989) Fifth Doctor Mawdryn Undead