British doctor and serial killer who killed patients by injecting them with lethal amounts of diamorphine.
He graduated from the Leeds School of Medicine in 1970 and was fined for prescribing himself pethidine in 1975.
He was proven responsible for the murder of over 250 people, making him one of the most prolific serial killers in recorded history.
His mother died of lung cancer when he was 17 years old.
He inspired an episode of the television show Law & Order: SVU, which starred Mariska Hargitay. The episode is called "D.A.W."