Head on Collision: Eighty people died when the Express Samina sank near the Greek island of Paros. How did it hit a rock that rose 25 metres out of the sea? Experts investigate.
Collision Course: Two trains crashed in the Rocky Mountains, but why were they on the same track? An inquiry reveals the shocking truth about those who run Canada's freight trains.
Runaway Train: A freight train travelling through the calm suburb of San Bernardino derails and crashes, destroying homes and taking lives. Two weeks later, more carnage follows.