Show Highlight Smiley Face Killers: Forensic Pathologist Believes Brian Welzien Was Murdered (Season 1, Episode 4) oxygen Insider Exclusive! Create a free profile to get unlimited access to exclusive videos, sweepstakes, and more! Sign Up for Free to View Smiley Face Killers: Forensic Pathologist Believes Brian Welzien Was Murdered (Season 1, Episode 4) Watch the Full Episode