'The triumph of virtue. The misfortunes of vice. Who said the play had to be like the book?' 24 Messidor, XXII: the TARDIS has landed in post-revolutionary France, or so it appears. But the futuristic structure of the New Bastille towers over a twisted version of Paris. And First Deputy Minski, adopted son of the infamous Marquis de Sade, presides over a reign of terror that has yet to end. Revolutionary soldiers arrest an ailing Doctor as a curfew breaker. Dodo is recruited by a band of wandering players whose intentions are less than pure. Deep in the dungeons of the Bastille, Prisoner 6 tries desperately to remember who he is. And outside time and space, a gathering of aliens watch in horror as their greatest experiment goes catastrophically wrong.