Paul Bruce was a tough, idealistic young trooper in the SAS when he was dispatched to Northern Ireland. His squad's top-secret mission, code sign Nemesis - to execute unarmed IRA suspects in cold blood. Bruce and his squad shot down one terrified victim after another, leaving their bodies buried in unmarked woodland graves. Slowly they grew bitter at the sordidness of their assignment, yet worse was to follow with new orders from British military leaders. This is Bruce's story.