Lyle and Marie McCann were last seen on July 3, 2010, while on a road trip from their hometown of St. Albert, Alberta, to Chilliwack, in the Canadian province of British Columbia.

[5] That same day they were seen at a Superstore gas station fuelling their 1999 Gulfstream Coach motorhome in St. Albert, with their green Hyundai Tucson in tow.

[3][6] In the evening of July 5, firefighters responded to a motorhome on fire at the Minnow Lake campground near Edson, Alberta.

[7] When the McCanns did not arrive in at Abbotsford Airport on July 10, their daughter, Trudy Holder, notified the RCMP, who released a missing persons notification.

[8] Vader had multiple outstanding warrants at the time and a criminal history, including vehicular theft in 1995; possession of break-in tools, driving a motor vehicle while unauthorized, operating an irregular motor vehicle and trailer, and weapons charges in August 2009; stealing and burning a truck in December 2009; and careless use of a firearm and unauthorized possession of a firearm in June 2010.

[13] Vader, still in custody, was denied bail on March 18, 2011; the RCMP believed he still had information about the McCanns or had some involvement with them, though he did not face any charges related to the investigation.

[17] On April 23, 2012, Vader was officially charged with two counts of first-degree murder in the deaths of Lyle and Marie McCann, though the whereabouts of their bodies is still unknown.

[7] On October 12, 2012, Vader was convicted of offences that included drug trafficking, theft, and weapons charges, though a new trial was ordered due to previously undisclosed evidence.

[19] Upon his release, Vader told the media that the RCMP had "probably destroyed my life... [They] put me in jail for four years to investigate me when there was nothing there to begin with" and that he knew nothing about the McCanns and that his "heart goes out to them.