Personally I'm too lazy to try to write a book; I could probably get as far as just the first sentence, something like this-
"After a whirlwind romance during a Rhine cruise, widowed Betty marries a suave German Count and goes to live with him in his fairytale Bavarian castle.
However her world falls apart when she finds some old WW2 documents in a trunk in the attic that reveal he is in fact the notorious wanted war criminal Otto von Schlorter, alias the Prussian Butcher, the infamous commander of the SS Atrocity Squad"