A Trend?

I wrote to someone recently that if they were unfamiliar with Rebecca Pawel's work then they might get an idea of it if they knew what all Olen Steinhauer has done.

Here was my thinking at the time: both authors are young writers who write about war-torn Europe of the 1930's, 40s. They both have intriguing and not necessarily attractive (at first) main protagonists. Both write fine, delicate prose, strength to be found in the sharp descriptions of time, place and persons.

What I want to know is whether two authors makes a trend. Are there others currently handling the same period?