On 12 January 1966, the bodies of Margaret Reynolds, age 6, and Diana Joy Tift, age 5, were found together in a ditch at Mansty Gully on Cannock Chase in Staffordshire. Reynolds went missing on her way to school in Aston, Birmingham, on 8 September 1965, and Tift went missing on a short walk to her grandmother's house in Bloxwich on 30 December that year. Two thousand people searched for Reynolds in the hours following her disappearance.
The three murders were similar in that each victim was determined to have been coaxed into a car while near her home, then murdered after being sexually assaulted. Darby, Reynolds, and Tift lived within a seventeen-mile radius of each other and near the A34 road that passes through Cannock Chase. Furthermore, a 10-year-old girl named Jane Taylor had been abducted while riding her bicycle in the village of Mobberley in August 1966, and investigators could not disprove her disappearance was linked to what were colloquially known as the "A34 murders".