The Broken Girls by Simone St. James
My rating: 3 of 5 stars
Switching between two timelines (2014 and 1950) had the unfortunate effect of lessening the tension and suspense - not quite sure how this could have been done better, however, unless the author had decided to trace other deaths attributed to Mary Hand. The stories of how Sophie and Deb died are well-done (letting people know that not everyone who was in a concentration camp was a Jew, particularly those in Ravensbruk, was a good choice; might I recommend A Train in Winter for those wishing to learn more about the French women rounded up?) although the "investigation" is a little predictable.
ARC provided by publisher.