Twenty years after detonating a bacteriological weapon over Samur, rendering it uninhabitable, the Sontarans are back: a select platoon of seven has landed here on a secret mission, carrying sealed orders given to them by Fleet Marshal Stabb. The TARDIS has landed here, too, bringing the Doctor, Tegan...
"My dad used to say to me, 'Try to keep a cool head and a warm heart.' At least I think it was my dad. I don't really remember him." Gravy worked in the graveyard - hence the name. He was having a normal day until his friend Benjy turned up in a car Gravy didn't recognise. Benjy had a bullet hole in his chest, but lived just long enough to ask Gravy to hide him and look after his gun. Gravy had looked after things for Benjy before, but never a gun. When Gravy looked in the car...