S1, E4: Marlott takes a terrified Pritty on his assignation to meet the men who kill for money and they find themselves in the tunnels under Smithfield market, which run from the Fortune of War pub to St Bart's Hospital. In the darkness, Marlott meets Mrs Bishop and the gang - her sons. For a price, they will kill to order; Marlott pretends he needs a fresh dead girl and says he will identify her and they arrange a rendezvous for the following night. Flora has returned to Marlott's lodgings. Marlott calls on the Herveys' London house to find out more about her decision to return to him - Daniel says she was determined to leave. Marlott quizzes him further about the surgeons and in particular the study of galvanism - electrifying the dead back to life. Hervey is skeptical but persuades Marlott to take a bottle of tincture for the sore on his hand. Now that Flora is back, Marlott intends to use her as bait for the Bishop gang, much against Nightingale's wishes as he has fallen for Flora. When the Bishops kidnap Flora, Marlott calculates her destination - a brickworks and kiln just outside London. In hot pursuit, a shoot out erupts and the gang are killed or dispersed - Mrs Bishop is taken off for trial. Marlott discovers fresh and old corpses in the brick kiln - including the unconscious Flora. Mary Shelley has left her house in London and arrived at a country house in which we discover scientific contents are covered in dust and covers - as she pulls off the covers she reveals a large galvanising machine and a gurney covered in blood.