Stella Maudine Nickell (née Stephenson; born August 7, 1943) is an American woman who was sentenced to ninety years in prison for product tampering after she poisoned Excedrin capsules with lethal cyanide, resulting in the deaths of her husband Bruce Nickell and Sue Snow, a stranger.

Rachel Jane Nickell (23 November 1968 – 15 July 1992) was a British woman who was stabbed to death on Wimbledon Common in south-west London on 15 July 1992.

(born December 1, 1944) an American skeptic and investigator of the paranormal.