Revenge of the Judoon (novel)

Publisher's Summary
The TARDIS brings the Doctor and  Martha to Balmoral in 1902. Here they meet Captain Harry Carruthers-freind of the new king, Edward VII. Together they head for the castle to see the king-only to find that Balmoral Castle is gone, leaving just a hole in the ground. The Doctor realises it it the work of the Judoon-a race of ruthless space police. While Martha and Carruthers seek answers in London, the Doctor finds himself in what should be the most deserted place on Earth-and he is not alone. With help from Arthur Conan Doyle, the Doctor and his freinds discover a plot to take over the world. With time running out who will fall victim to the Revenge of the Judoon

Characters

 * The Doctor
 * Martha Jones
 * Harry Carruthers
 * Judoon
 * Arthur Conan Doyle

Continuity

 * The Judoon previously appeared in Smith and Jones.