A London school is haunted by strange, bat-like creatures at night. When the Doctor investigates, he finds an old friend, Sarah Jane Smith, already working undercover. Meet the new Doctor!

A London school is haunted by strange, bat-like creatures at night. When the Doctor investigates, he finds an old friend, Sarah Jane Smith, already working undercover. How scary is the episode?

Upon his death in 2010, a doctor who had practiced out of a modest house ... was a long-time member of the Dean’s Advisory Council for the Jacobs School, and made it to every single class reunion ...