Peter Sopow, 52, was a veteran RCMP sergeant and commander of the Fort Macleod detachment when he and his girlfriend, kindergarten teacher Lorraine McNab, were ambushed and shot with a .22-calibre firearm outside her rural acreage south of Pincher Creek, Alberta, on the night of December 13, 1997. The couple had returned from a family dinner in nearby Twin Butte and made it only to the area outside McNab’s home before the attack. Their bodies were moved into a locked horse trailer on the property and were not discovered until December 15, after Sopow failed to report for duty.

Investigators treated the killings as targeted rather than random, searched the acreage extensively, brought in specialists and conducted water searches, but never recovered the murder weapon.

More than 1,000 tips were received over the years, two anonymous handwritten letters reached police in 2001, and the case was later handled by the RCMP’s Historical Case Unit. Despite extensive work and ongoing interest from investigators and family, no one has been charged or convicted. Does anyone with memories of the Pincher Creek area in December 1997 or information about the described vehicle or the missing .22-calibre firearm have details to share?