http://edmontonjournal.com/news/local-news/sept-15-1971-real-estate-agents-murder-remains-a-mystery
"EDMONTON – Edmonton real estate agent Mary Ann Plett headed out with a prospective buyer 43 years ago to look at an acreage southeast of the city.
The client, James Cooper, was a large man in his 40s with a low, rough voice. He told Plett he worked for a Winnipeg pumping company and was interested in buying property in the Looma area, 30 kilometres outside Edmonton.
The 29-year-old mother of two never returned home. Police were notified and a search was launched, which at the time was the largest in Alberta history.
The acreage was combed metre by metre. A large slough on the property was drained, and every part of its mucky bottom explored.
The mystery and suspense surrounding Plett’s disappearance mounted with every passing day. James Cooper was never found, although several people with similar names were interviewed.
Two days after her disappearance, Plett’s car was located, locked and abandoned on a southside used-car lot. Inside the vehicle, two small human blood stains were found as well as a crumpled, mussed up wig, similar to one owned by Plett."