Graham Young(1947-1990)
Graham Young was an English serial killer who murdered his victims via poison. Obsessed with poisons from an early age, Young started poisoning the food and drink of relatives and school friends, and at the age of 14 he was detained at Broadmoor Hospital. After being released in 1971, Young got a job in a factory in Bovingdon, Hertfordshire, where he began poisoning his colleagues, resulting in two fatalities and several critical illnesses. Young was convicted on two counts of murder and two counts of attempted murder in 1972. He served most of his life sentence at HM Prison Parkhurst, where he died of a heart attack in 1990.