The investigation began on February 2nd 1999, after firefighters made a ghastly discovery in the charred ruins of a small farm house in the northern outskirts of St Thomas, about a half an hour's drive from London.
Inside the home were the burned bodies of Roger Smith and his common-law wife Wendy Haveron, who police say had been beaten to death by a killer who then torched the house in an effort cover up the crime.
Police found few leads in the case in the years after the homicides, prompting the provincial government to issue a $50,000 reward on the double-killing's tenth anniversary in the hope it would provide financial incentive that could dislodge a vital clue.
The clue never materialized and now, 16 years after the couple was found dead on a dairy farm outside of St Thomas, police have once again renewed their call for help.
"We are asking the public to please think back, no matter how small the information may be if you have any information at all please share that information," OPP Sgt. Peter Leon said Monday.
"If you reach out and speak to investigators everything will be done to the best of their ability to guarantee that the information that you provide is taken in confidence," he said.