The Foreign Secretary is being held under the Terrorism Act. He will answer the police's questions on one condition - they let him speak to Dr Augusta Bloom.
He asks Bloom to track down his niece, Scarlett, who hasn't spoken to her family for ten years. The last they heard, Scarlett was getting involved with Artemis - an organisation dedicated to women's rights and the feminist movement, led by the charismatic Paula Kunis.
But as Bloom learns more about Artemis, she's torn. Is this organisation everything it claims to be, or do they have a secret side and an alternative agenda? And if so, what has become of Scarlett?
The only way to find out for sure is for Bloom to go undercover. But will she make it out safely - or will she become the next Artemis woman to disappear?