Fifty Dead Men Walking -- Film Description:
"In the 1980s when the Irish civil conflict was at its most treacherous, 22-year-old Martin McGartland was recruited by the British police to infiltrate and spy on the Irish Republican Army. He lived his life under constant threat of exposure and, if caught, guaranteed torture and death, yet he continued because his information saved many lives. McGartland enjoyed the buzz until one day he was discovered and had to escape against all odds. Inspired by a true story, Fifty Dead Men Walking tells the story of a man who remains on the run."
-- Telefilm Canada

Source:
"Telefilm Canada: Catalogues: Fifty Dead Men Walking" Telefilm Canada. http://www.telefilm.ca/en/catalogues/production/fifty-dead-men-walking.