A former front-line investigator with CP Rail's own police force alleges that his investigation into the deadly derailment of Train 301 was shut down after just a month by his company. “I was ordered to stop investigating,” said Mark Tataryn. Through exclusive interviews with a witness, a CP Rail conductor and the families of the three dead crew members, we have pieced together the terrifying final moments of the runaway train, which suffered brake failure and killed everyone on board.