Francesca Biagi-Chai's book - a translation from the French of Le Cas Landru - tackles the issue of criminal responsibility in the case of serial killers, and other 'mad' people who are nonetheless deemed to be answerable before the law in most jurisdictions. The author, a Lacanian psychoanalyst and senior psychiatrist in France, with extensive experience working in institutional settings, analyzes the logic informing the crimes of famous serial killers.