The German writer’s astounding investigation shows that the Third Reich was permeated with drugs: cocaine, heroin, morphine and, most of all, methamphetamines – or crystal meth. Everyone from factory workers to housewives, and, crucially the troops, used drugs. The promiscuous use of drugs at the very highest levels also impaired and confused decision-making. Hitler and his entourage took refuge in potentially lethal cocktails of stimulants administered by the physician Dr Morell.