Flora seeks mercy from Inspector Marlott after escaping Billy Oates. Marlott believes she may be a key witness and so moves her into his home for safety. The investigation continues and Marlott meets Mary Shelley.

Boz publishes an article about the murders on the eve of Anatomy Act, infuriating Peel in the process. Mary follows her own line of enquiry into the practice of Sir William Chester. Marlott wonders if there is something he is missing from Greenwich.