A Philosophical Investigation

A Novel

A terrifyingly prescient cult classic by the bestselling author of the Bernie Gunther series. 

“Chilling...absorbing...part techno-thriller, part futuristic detective story, part diary of a serial killer.”—The New York Times Book Review
 

LONDON, 2013. Serial killings have reached epidemic proportions—even with the widespread government use of DNA detection, brain-imaging, and the “punitive coma.” Beautiful, whip-smart, and driven by demons of her own, Detective Isadora “Jake” Jacowicz must stop a murderer, code-named “Wittgenstein,” who has taken it upon himself to eliminate any man who has tested posi­tive for a tendency towards violent behavior—even if his victim has never committed a crime. He is a killer whose intellectual brilliance is matched only by his homicidal madness.
Philip Kerr is the New York Times bestselling author of the acclaimed Bernie Gunther novels, three of which—Field GrayThe Lady from Zagreb, and Prussian Blue—were finalists for the Edgar® Award for Best Novel. Kerr has also won several Shamus Awards and the British Crime Writers’ Association Ellis Peters Award for Historical Crime Fiction. As P. B. Kerr, he is the author of the much-loved young adult fantasy series Children of the Lamp. View titles by Philip Kerr

About

A terrifyingly prescient cult classic by the bestselling author of the Bernie Gunther series. 

“Chilling...absorbing...part techno-thriller, part futuristic detective story, part diary of a serial killer.”—The New York Times Book Review
 

LONDON, 2013. Serial killings have reached epidemic proportions—even with the widespread government use of DNA detection, brain-imaging, and the “punitive coma.” Beautiful, whip-smart, and driven by demons of her own, Detective Isadora “Jake” Jacowicz must stop a murderer, code-named “Wittgenstein,” who has taken it upon himself to eliminate any man who has tested posi­tive for a tendency towards violent behavior—even if his victim has never committed a crime. He is a killer whose intellectual brilliance is matched only by his homicidal madness.

Author

Philip Kerr is the New York Times bestselling author of the acclaimed Bernie Gunther novels, three of which—Field GrayThe Lady from Zagreb, and Prussian Blue—were finalists for the Edgar® Award for Best Novel. Kerr has also won several Shamus Awards and the British Crime Writers’ Association Ellis Peters Award for Historical Crime Fiction. As P. B. Kerr, he is the author of the much-loved young adult fantasy series Children of the Lamp. View titles by Philip Kerr