Actor and aviator Martin Shaw takes to the skies to rediscover one of the most audacious and daring raids of World War II. On the morning of 18 February 1944, a squadron of RAF Mosquito bombers, flying as low as three metres over occupied France, demolished the walls of Amiens Jail in what became known as Operation Jericho. The reasons behind the controversial raid remain a mystery to this day. This dramatic documentary investigates the missing pieces of the story, with interviews from survivors and aircrew, and tries to find out why the raid was ordered and by whom.