Anne Travers's personal struggle to cope with her father's abduction and contribute to the fight against the Great Intelligence.

In the Goodge Street Ops Room, a Yeti bursts in during a moment of relative calm, violently attacking Professor Travers and Anne. The creature knocks Anne unconscious with a single …

The Doctor delivers the devastating news to Anne that her father, Professor Travers, has been abducted by the Great Intelligence—not as a random act of violence, but as a calculated …