'HOW DO YOU KILL SOMEONE?' ASKED THE DOCTOR. 'EVISCERATE THEM, CRUSH THEM, REVERSE THEIR PARTICLES. BUT DO THE DEAD ALWAYS STAY DEAD?' The TARDIS brings the Doctor, Romana and K9 to the Rock of Judgement; a court, prison and place of execution built into a rocket-powered asteroid. There they become embroiled in an investigation by the system's finest lawman. What connects the macabre gallery of the artist Menlove Stokes with the slaughter of a survey team on a distant planet? Why is Margo, chief of security, behaving so strangely? And which old enemies of the Doctor are aboard the unmarked spaceship making its way towards the Rock?