According to several sources, she met the accused, Rodney Nichols, in Florida, and the pair lived together in Montreal for a short time before she disappeared.
When she was first declared missing, the Service de Police de la Ville de Montréal (SPVM) investigated and shared news of her disappearance with the media and other police forces. By that time, Parchman Langford was already dead.
Investigators did not realize a body found 150 kilometres west of Montreal several months earlier was actually Parchman Langford.
Ontario Provincial Police (OPP) found the woman floating in Nation River just off Highway 417 near Casselman, Ont., in May 1975.
"In 1975, everything was done by telephone, fax or mail," said de Repentigny in an email. "Now, information about a body found can be shared rapidly with all police services in the province, the country or even internationally, making identification much easier."
Former SPVM detective Minh Tri Truong believes the investigation would have had a much better chance of success in 1975 if police had connected the discovery of the body with Parchman Langford's disappearance.
"If they had made a link, it would have changed [the investigation] on several fronts," says the 30-year veteran of the SPVM. "Murder charges without the body being found, in the history of Canada, there have been four or five, no more."