Back in 2003, eight tourists were backpacking through the ruins of Cuidad Perdida in Northern Colombia when they were kidnapped by militants who held them for four months. One of those kidnapped, a British man named Mark Henderson, was released after being held captive for 102 days when senior clergy from the Roman Catholic Church helped negotiate his release. The militants weren't holding the backpackers for ransom, but instead wanted to "publicise the persecution of Indian villagers and massacres carried out by rightwing paramilitaries," according to a 2003 BBC report.
At the time this was the biggest kidnapping to happen in Colombia in two decades, and once he was released Henderson spoke of an extremely "painful" experience that included 18-hour days trekking through the dense jungle. Though he thought his ordeal was finally over, one year later Henderson began receiving Facebook requests from two of his kidnappers. They began a dialogue that eventually turned into a new mission for Henderson -- one that would find him returning to the scene of the original crime in an effort to film a documentary about revisiting the experience and how it impacted not only himself and his family, but his kidnappers as well.