In John Farrow's riveting 10th novel featuring his iconic detective ? mile Cinq-Mars, an investigation into a peculiar rash of deaths, in which the elderly sitting up straight suddenly " pop off," lays bare the roots and intricacies of the opioid crisis. Retired from the Montreal Police Service, Cinq-Mars is tapped by a State Trooper to look into deaths being booked as " natural causes." Should they perhaps be viewed differently, as suspicious?...