Michael Buerk introduces more true-life rescue tales, including that of a group of workers trapped beneath a huge steel door in a sewer on Liverpool's docks.
Meanwhile, Marc Cass gets to grips with his fear of insects and a five-year-old tells the story of how she saved her dad's life when he lapsed into a diabetic coma.
Producer Stephen Rankin ; Executive producer Dick Colthurst (S) (W)