Dragon Harvest

There may be some spoilers for earlier books.

Lanny Budd number six continues the curious mixture of adventure, suspense, history, and romance of this series. It picks up right where book five left off. (You can read these books stand-alone, but they are much better read in sequence.) Lanny Budd continues his dual life, using his cover as a world-beating art expert to disguise his activities as a secret agent (presidential agent) working directly for FDR.
The action takes place mostly during 1939. We get the German invasion of Poland, followed by the phony war. Then come the invasions of Norway, the Low Countries, and France. All the time Lanny is shuttling around between Germany, France, England, and the USA doing his presidential agent thing. He has adventures. For example, at one point he has to rescue an American lady who underestimated the danger she was in from right under the Gestapo's nose. Later, he gets directly involved in the rescue of the British and French armies at Dunkirk.
There is an incredible amount of detail in all these books. Sometimes it seems to me to be a little too much, actually getting in the way of the story. I have to remember that such detail was perhaps needed because at the time of publication the details depicted weren't history; they were recent events and would have been expected by knowledgeable readers.
Pretty good story. 3.5 stars rounded up.