Overview: University lecturer Neil Tannahill is drawn into a sinister conspiracy involving secretly-stored Soviet nuclear waste at a remote British nuclear facility after receiving an enigmatic note from legendary atomic scientist and one-time former head of "Doomwatch" (the infamous Scientific watchdog group of the seventies), Dr Spencer Quist.
Overview: It's Christmas Eve, but this is to be a far from silent night - the cruel Sycorax have come to Earth to enslave mankind and, as ever, only The Doctor can stop them. Unfortunately, he's lying in a coma in Jackie's home...
