James Delaney finds himself alone with the mysterious Dr Dumbarton, discovering an unlikely new ally.

Cast: Donovan Louie, Evelyn Van Marle, Alfie Mackay, Ruby-May Martinwood, Lewis Lloyd, Tom Hardy, Michael Kelly, Jason Watkins, Mark Gatiss, David Hayman, Stephen Graham, Danny Ligairi, Fiona Skinner, Scroobius Pip, Ben Moor