Last night I finished Resistance by Owen Sheers.

Resistance is an alternate history novel, postulating a fairly standard alternative - what if Germany had won WWII? - but with a novel twist: the book is not set after the war, but during it. The D-Day invasion has failed and Germany has replied with an invasion of Britain. The novel deals with a small group of women, isolated after their husbands disappear to help out an anti-German insurgency, and their interactions with a small group of German soldiers who come to their remote valley on a special mission.

More of a sophisticated character study than the thriller one might expect from the description, Resistance is a well written debut novel, well worth checking out if you have the right expectations.