London, 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 his homicidal madness.
Philip Kerr has written over thirty books of which the best-known are the internationally renowned and bestselling Bernie Gunther series. The sixth book in the series, If the Dead Rise Not, won the CWA Historical Dagger. His other works include several standalone thrillers, non-fiction and an acclaimed series for younger readers, The Children of the Lamp. Philip died in March 2018, days before the publication of his 13th Bernie Gunther thriller, Greeks Bearing Gifts. He was made a Fellow of the Royal Society of Literature shortly before his death.