A brilliant war films. The acting was superb ,involving excellent actors playing the parts of very brave agents to thwart Germany's missile and rocket programmes. Although fictional, it does show how Duncan Sandys and aerial photographic evidence helped to destroy the V1 bombs. It also shows the difficulty in locating and bombing V2 missiles as they had mobile launch vehicles and not ramps like the V1 bombs required. Very exciting,riveting and in many parts quite educational. Enjoyed it immensely.