This is not a thriller. It's not action-packed or full of suspense. It is a plausible scenario where Germany could have invaded England in early summer of 1940 and, while they might not have overrun the islands and won the war in a stroke, they might have forced the signing of a nonaggression pact, guarding their backsides and preventing the total collapse that actually occurred in 1945. If you like what-if scenarios, some heavy thinking, and reasoned battle analyses and campaign histories, you'll love this. If you're looking for something lighter, you'll be disappointed.