The mysterious train became the main sight of St. Louis, a little village in the Canadian province of Saskatchewan. There are just around 400 people living there and hundreds visit it to see the St. Louis light. It was featured in books and online, and was on TV shows like Unsolved Mysteries. For decades, no one could explain what it really was.

Some people spotted a white light, others said they'd seen a red one. An urban legend explained the red light was a lantern carried by a mysterious a train conductor who had lost his life one night examining the tracks. Scientists tried to debunk both theories but failed. Then, two high school students from northern Saskatchewan decided to jump in. They first witnessed the mysterious train on a road trip to St. Louis...

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