Ann Ogilby, born around 1942/1943 in Sion Mills, County Tyrone, moved to Belfast and worked in a series of low-paid jobs. She had children by different partners, including her daughter Sharlene, and later became involved with William Young, a married, high-ranking member of the then-legal Ulster Defence Association (UDA). Young was interned at the Maze Prison in 1973, and Ogilby became pregnant with his son, Derek, who was born prematurely in 1974. During Young's internment, Ogilby repeated his complaint that his estranged wife, Elizabeth Young—a member of the Sandy Row women's UDA unit—had not been sending him food parcels. This remark was overheard in a Sandy Row pub and was regarded by the women's unit, led by Elizabeth "Lily" Douglas, as a grievous insult, compounding existing anger over Ogilby's affair with Young.
On 23 July 1974, eight weeks after giving birth, Ogilby was abducted by UDA women and brought before a kangaroo court held at a disused bakery on Hunter Street, Sandy Row, that had been converted into a UDA club. Although the UDA women found her "guilty," two UDA men present could not agree on a punishment and ordered her release. After a further confrontation at a bus station—during which Royal Ulster Constabulary (RUC) officers briefly intervened without making arrests—Douglas resolved that Ogilby would be killed.
On 24 July 1974, Ogilby and her six-year-old daughter Sharlene were abducted outside a Social Services office in Shaftesbury Square by UDA member Albert "Bumper" Graham. After Sharlene was sent to buy sweets, Ogilby was hooded and taken upstairs at the Hunter Street club, where two teenagers, Henrietta Cowan (17) and Christine Smith (16), beat her with sticks and bricks on the orders of Douglas. Sharlene returned during the assault and could be heard outside pleading for her mother; the beating, which lasted over an hour, resulted in Ogilby's death from 24 blows, 14 of which fractured her skull. Her body was later dumped in a ditch near the M1 motorway and discovered on 29 July 1974.
The RUC investigation, aided by Sharlene's recollection of the location, led to the arrest of ten women and one man within weeks. In February 1975, at the Belfast City Commission, Cowan and Smith pleaded guilty to murder and were sentenced to be detained at Armagh Women's Prison for life. Elizabeth "Lily" Douglas pleaded guilty to manslaughter and was sentenced to ten years' imprisonment, with additional concurrent sentences for intimidation and unlawful detention. Others, including Albert Graham and Josephine Brown, received lesser sentences as accessories after the fact; several further women received sentences for intimidation.
The killing caused widespread public revulsion in Northern Ireland. The UDA leadership publicly disowned the Sandy Row women's unit, which was subsequently disbanded. The case was later reviewed by the Historical Enquiries Team, established by the Police Service of Northern Ireland to investigate controversial killings from the Troubles.