The Crusade When the TARDIS lands in twelfth-century Palestine, the Doctor and his friends are caught up in the conflict of the Third Crusade. The Space Museum The TARDIS skips a time-track and lands on the planet Xeros where the time travellers see their own future - as exhibits in a museum. The Chase Under orders to exterminate the Doctor and his companions, the Daleks pursue the TARDIS through time and space... The Time Meddler The Doctor, Vicki and Steven land in Saxon England on the eve of a Viking invasion. There they meet a mysterious monk who is determined to divert the course of history.