On February 7, Williams was interrogated on video by OPP investigator Jim Smyth and confronted with the evidence of tire tracks and boot prints at Lloyd's house.

Evidence showed he had broken into at least 82 houses to steal women's and girls' underwear, which later escalated to sexual assaults and later still to the rapes and murders.

[4] From July 2009 until his arrest, Williams commanded CFB Trenton, Canada's largest military airbase and a hub for the country's foreign and domestic air transport operations.

While living in the Scarborough Bluffs area, Williams began high school at Birchmount Collegiate but finished at Upper Canada College (UCC).

[11][14][15] Williams then studied economics and political science at the University of Toronto Scarborough (UTSC), where another notorious Canadian murderer, Paul Bernardo, was coincidentally two academic years ahead of him.

[19] Promoted to captain on January 1, 1991,[20] Williams was posted to 434 Combat Support Squadron at CFB Shearwater, Nova Scotia, in 1992, where he flew the CC-144 Challenger in the electronic warfare and coastal patrol role.

[20] Williams earned a Master of Defence Studies from the Royal Military College of Canada in 2004 with a 55-page thesis that supported pre-emptive war in Iraq.

In June 2004 he was promoted to lieutenant-colonel, and the following month he was appointed commanding officer of 437 Transport Squadron at CFB Trenton, Ontario, a post he held for two years.

[12][21][20][22][23][24] From December 2005 to May 2006, Williams also served as the commanding officer of Camp Mirage, a secretive logistics facility believed to be located at Al Minhad Air Base in Dubai, United Arab Emirates, that provided support to Canadian Forces operations in Afghanistan.

One week after her disappearance, the Ontario Provincial Police (OPP) conducted an extensive canvassing of all motorists using the highway near her home from 7:00 p.m. on February 4, 2010, to 6:00 a.m. the next morning, looking for the tire treads.

He disclosed his role in dozens of crimes, including multiple acts of breaking and entering and sexual assault, in and around Tweed and Orleans, Ontario, at locations close to property owned by Williams and his wife.

[21][36][38] He was also charged in the death of Corporal Marie-France Comeau, a 37-year-old military traffic technician based at CFB Trenton, who had been found dead inside her home in late November 2009.

[22][25] Hours after the announcement of Williams' arrest, police services across the country reopened unsolved homicide cases involving young women in areas where he had previously been stationed.

[40] A week after Williams' arrest, investigators reported that, along with hidden keepsakes and other evidence found in his home, they had matched a print from one of the homicide scenes to his boot.

[41] In April 2010, Williams was placed on suicide watch at Quinte Detention Centre in Napanee, Ontario after he tried to kill himself by wedging a stuffed cardboard toilet paper roll down his throat.

[46] On the first day of Williams' trial and guilty plea, details emerged of other sexual assaults he committed, including that of a new mother who was woken with a blow to the head while she and her baby were asleep in her house.

Crown Attorney Robert Morrison presented numerous pictures of Williams dressed in the various pieces of underwear and bras he had stolen, frequently masturbating while lying on the beds of his victims.

[50][51] Ontario Superior Court Justice Robert F. Scott sentenced Williams on October 22, 2010, to two concurrent terms of life imprisonment, with no consideration of parole for 25 years.

[58][59] On May 10, 2012, the Canadian Forces announced that it had made a "terrible mistake" by publishing a booklet with a photograph containing Williams in the background and ordered 4,000 copies of the book destroyed.

[63] In December 2010, Williams' wife, Harriman, began the process of filing for divorce, together with a request to have any of her financial and medical information sealed by the court.

In November 2017, Dutch film director Ramón Gieling released a documentary, Fatum (Room 216), that uses footage of Williams' 10-hour-long police interrogation.

[66] A television movie adaptation of the Williams case, An Officer and a Murderer, with American actor Gary Cole in the lead role, premiered on the Lifetime Network in the United States on July 21, 2012.