An archaeological dig in 1936 unearths relics of another time... and, as the Doctor and Amy realise, another place... another planet. But if Emmaline Porter, noted adventuress, has really found evidence of an alien civilization, how come she isn't famous? How come Amy's never heard of her? Come to that, since she's been travelling with him for a while now, how come Amy's never even heard of the Doctor? As the ancient spaceship reactivates, the Doctor discovers that nothing and no one can be trusted. The things that seem most real could actually be illusion. Obvious illusions could be real - and deadly! A thrilling, all-new adventure featuring the Doctor and Amy, as played by Matt Smith and Karen Gillan in the spectacular hit series from BBC Television.