their horns, destroying their psychic abilities. The Doctor gets an audience with Goibhnie, who turns out to be an alien scientist whose experiment has been completed. The Doctor appeals to Goibhnie's scientific curiosity to extend the experiment. Goibhnie restores the sun, and agrees to help collect the demons, which are discarded products of his experiments. Ace discovers that General Nuada, the head of Dinorben's military, is in fact a shape-shifting demon. Nuada summons all of the demons for a final assault on Dinorben. David finds himself summoned by Nuada, since he was attacked by a demon when he came to Llanfer Ceirog as a child. Goibhnie returns to Dinorben, but is mortally wounded in the battle against the demons. David manages to hold on to his self-control and kills Nuada, and eventually with the Doctor's assistance, is restored to human form. Goibhnie gives the Doctor his power source, which the Doctor uses to reprogram the gateway. All of the demons are funneled into the stone circle, and transmatted to the now rejuvenated sun. The Doctor, Ace, Jack, David, Stevens, and Taylor return to Earth, and the stone circle is destroyed. The unicorns, now trapped on Earth, are beginning to recover. The Doctor promises Ace that UNIT will look after them. The Doctor uses Goibhnie's experimental material to repair his ailing TARDIS, unaware that a fleck of demonic material had contaminated the supply. Continuity The later New Adventure Deceit reveals that the fleck of demonic material that contaminates the TARDIS is responsible for the Doctor's moodiness over the next several novels. The duplicates of the Doctor and Ace reappear in Return of the Living Dad. Notes One of the mythical races on Tír na n-Óg, Fomoir, is described as trolllike. References External links The Cloister Library - Cat's Cradle: Witch Mark 1992 British novels 1992 science fiction novels Virgin New Adventures Seventh Doctor novels