Like other history reality series (Manor House, 1940s House), it is fascinating to see contemporary individuals come to grips with historical tools and processes ... and then have to 'make them work' to achieve a goal. Fourteen start, six survive -- and not necessarily the ones you'd expect. The facilitator judges are credible also, so it's an interesting insight into the British secret service in WWII. While some of the historical facts seemed slightly breathless and overblown, the human element was quite real and credibly done.
