After a young, vibrant Australian-American couple and a much-loved university professor are murdered in northern British Columbia, police race to track down the perpetrator before anybody else is killed. Two missing teens quickly turn into the prime murder suspects, and officers follow a trail of clues across Canada into the vast wilderness of northern Manitoba. The gripping story drew international media attention, and people across the world waited for any updates as the manhunt continued on for several days. As Jules Knox reports, victims' families and investigators still have lingering questions that remain unanswered to this day.