Note: Novelisation of the 1998 BBV audio drama.
The Professor and Ace arrive in present-day London to find the city strangely changed. England is a republic, ruled by an elderly Lord Protector more interested in a mysterious comet than the long-suppressed forces of revolution fomenting in his kingdom.
As political factions vie for power, the travellers become embroiled in the plans of King Charles XIV who stands poised to reclaim the throne. Can they discover who is behind the drastic alteration of history or will the Puritan cause triumph throughout eternity.