A Philosophical InvestigationLondon, 2013, and the city is battling an epidemic of serial killings even with the widespread government use of DNA detection, brain imaging, and the 'punitive coma'. Detective Isadora 'Jake' Jacowicz is hunting a murderer, code named 'Wittgenstein,' who has taken it upon himself to eliminate anyone who has tested positive for a tendency towards violent behaviour even if they've never committed a crime. His intellectual brilliance is matched only by