In October of 2008, 39-year-old John Altinger, who worked in the oil industry, disappeared from his Edmonton condo in Alberta, Canada. Watch Dateline: The Smoking Gun on Oxygen Thursdays at 8/7c.

In October of 2008, 39-year-old John Altinger, who worked in the oil industry, disappeared from his Edmonton condo in Alberta, Canada. Friends received emails from Altinger's account on October 13 ...