Males are enticed with ad campaigns to submit for testing; those who are VMN-negative are given confidential treatment, including counselling and drugs, and assigned a code name out of the Penguin book of Great Thinkers (e.g., Shakespeare, Plato, etc.).

"Wittgenstein" is the code name of a VMN-negative who, until he was made aware of his status, was living a well-adjusted, if solitary, life, venting his sociopathic tendencies harmlessly through virtual reality entertainment systems.

In the novel's setting, the national government was elected partly on a platform of "retributive justice", rather than rehabilitative, and punitive coma has replaced the death penalty (and, to a lesser extent, incarceration) as punishment for extreme crimes.

In its favour, punitive coma is safely reversed, should someone later prove innocent; as well, prison costs have plunged since the inmates are sentenced to years of sleep rather than restraint, and require much less guarding and care.

Since the killer comes to see his whole act through the lens of the real Wittgenstein's philosophy (including his mid-career reversal following Tractatus Logico-Philosophicus), it's hoped that he will be amenable to philosophical persuasion.