Doctor Who Companion Profile: Ace
Dorothy Gale McShane, nicknamed Ace (which she says rather frequently) is troubled teenaged chemistry whiz, Ace enjoys cooking up bombs of her own recipe, Nitro-9, which she’s fond of carrying around just in case. While she was experimenting with explosives in her room, a time storm swept her off from contemporary (to when her stories aired) England to a spaceport in the far future, where she encounters the Doctor, who takes an interest in the displaced teen.