Tony Virgo

When his estranged wife is brutally attacked by a burglar, a law-abiding locksmith unconvinced that the junkie charged for the crime is the real attacker starts his own investigation.

The Doctor and his companions arrive at a medieval joust and are surprised to be greeted warmly by King John, who calls them his demons. But when a young nobleman returns, having just left King John in London, the Doctor realises that this king must be an impostor! Then the Master makes an appearance and the Doctor's worst fears are confirmed...