Sam Carroll was an 80-year-old patient at Marymount Hospital near London, Kentucky, who is named among the victims of hospital orderly Donald Harvey. Most victim lists linked to Harvey record Carroll’s death on January 6, 1971; one online memorial gives January 9, 1971, creating a date discrepancy. Carroll is specifically identified in those accounts as having been suffocated after being given a faulty or ineffective oxygen tank, a death later characterized as a premeditated killing rather than a natural hospital death.

No arrest was made at the time Carroll died. Harvey continued working in health-care settings for years; investigators only tied the Marymount deaths to him after his 1987 exposure in Ohio led to confessions about killings in Kentucky during 1970–1971. In Laurel County court in November 1987 Harvey pleaded guilty to multiple Marymount charges and received life sentences plus an additional 20-year term. There is no indication any other suspect was arrested for Carroll’s killing.

Did anyone who knew Sam Carroll or worked at Marymount in 1970–1971 have memories or records that could clarify the circumstances or the exact date of his death?