After vast amounts of years of imprisonment, the vicious Sild have broken out of confinement. From a ruined world by the end of your time, they make preparations to conquer the past, with the best goal of rewriting history. But to accomplish their aims they’ll have to enslave an intellect higher than their own… On Earth, Device is called in to investigate a strange incident on the North Ocean drilling platform. THE PHYSICIAN believes something is certainly afoot, no sooner has the analysis begun than something also stranger takes hold: the Brigadier is certainly starting to just forget about UNIT’s highest-profile prisoner. And he’s not alone in his amnesia. As the Sild invasion begins, the Doctor faces a terrible problem. To save lots of the universe, he must save his arch-nemesis… the Grasp. An entire and unabridged reading by Geoffrey Beevers, with original sound design.