Graham Young leaving Hemel Hempsted police station in 1972. Graham Young began murdering workmates shortly after he was freed from Broadmoor maximum-security mental hospital. His case inspired the cult film The Young Poisoner’s Handbook. His employers were never told that he was a poisoner so when colleagues began to suffer mysterious and painful deaths an undiscovered bug was blamed. The papers in Young’s case, marked “confidential” and dating from 1972, were kept hidden long after the 30-year rule meant…

Source: The Times January 02, 2020 17:03 UTC