The story of 350 American POWs held at a reclusive and secret concentraion camp administered by the Nazi regime. The story of 350 American POWs held at a reclusive and secret concentraion camp administered by the Nazi regime. The story of 350 American POWs held at a reclusive and secret concentraion camp administered by the Nazi regime. The story of 350 American POWs held at a reclusive and secret concentraion camp administered by the Nazi regime.