Rosemary gulped the barbiturate in one swig. "It's very bitter," she grimaced. But she was soon drowsy and asleep within two or three minutes. After a further 15 minutes, Rosemary, still fast asleep, started coughing as her metabolism sought to reject the lethal barbiturate. This was painful to hear, although, as we were told later, not unusual. After another 25 minutes, it was all over. Rosemary was dead