Ms McKinney was a brilliantly intelligent, erstwhile Miss Wyoming who came out of the Appalachians to join the Church of the Latter Day Saints (better known as the Mormons) and who, after failing to get off with Wayne Osmond, began a relationship with a certain Kirk Anderson. When he decided he'd had enough, she became seriously infatuated, following him around the country and harrassing him to such an extent that eventually he requested a posting overseas. Which is how he came to be in London in 1977.
But her determination to find him was greater than his ability to escape - she hired a private detective, tracked him down and came to Britain. With her was a friend, Keith May, whose position was always ambiguous, or at least unenviable: he seems to have been besotted with Ms McKinney, but to have accepted that he stood no chance of getting anywhere because of her own obsession with Anderson.
McKinney and May then proceeded to kidnap Anderson, threatening him with replica guns, bundling him into a car and taking him to a rented cottage, where he was held captive for three days. Whilst there ... well, look, this is how the London Evening News of 23 November 1977 reported the committal proceedings at Epsom magistrates court:
A young Mormon missionary told today how an ex-beauty queen kidnapped him and then made love to him while he was chained to a bed in a lonely cottage.
Kirk Anderson, 21, said the girl, Joy McKinney, and her friend, Keith May, tied down his arms and legs with leather straps, padlocks, chains and rope, so that he was spreadeagled.
May then left the room while Miss McKinney tore off his blue silk pyjamas.
'She grabbed my pyjamas from just around my neck and tore them from my body.
'The chains were tight and I could not move. She proceeded to have intercourse.
'I did not want it to happen. I was very upset.'