The TARDIS brings the Doctor and Martha to Balmoral in 1902.
Here they meet Captain Harry Carruthers - friend 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 is the work of the Judoon - a race of ruthless intergalactic mercenary space police.
- Cat. No.