Vincent Cochetel was held hostage for 317 days in 1998, while working for the United Nations High Commissioner for Refugees (UNHCR) in Chechnya. For the first time, he recounts the experience - from what it was like to live in a dark, underground chamber, chained to his bed, to the unexpected conversations he had with his captors. With lyricism and power, he explains why he continues his work today. Since 2000, attacks on humanitarian aid workers have tripled - and he wonders what that rise...