London 1900. Meet Denton - novelist, outsider, amateur sleuth.When a clearly disturbed man shows up one evening saying he has just seen Jack the Ripper, Denton dismisses him as a fantasist or a sensation-seeker. But the same night, the mutilated body of a teenage prostitute is found. Could the two events be connected? While the police investigation grinds to a halt, Denton becomes obsessed with finding out who the victim really was and who killed her. As he doggedly pursues the truth, his search leads him into the darkest underbelly of London. And an encounter with a remarkable woman leads him to confront his own demons.