Christopher Villiers

The Doctor is on the most beautiful train in history speeding among the stars of the future, but a deadly creature is stalking the passengers.

The Doctor returns to Gallifrey only to discover that a deadly game banned and derelict for centuries, has been reactivated. Soon he finds his other selves have also been summoned to assist him in tracing the culprit and tracking down the secret Rassilon.

The Doctor discovers that the Master has replaced the king with an imposter to thwart the signing of the Magna Carta.