In the 1930s, as the inevitability of war slowly dawns, Captain Michael Hendry, DSM, recruits two very different young people to work undercover. Tomasin West, a midwife with a thing about witches, is sent to be a courier in occupied Paris, supporting the French Resistance. But Peter Brandt, half-Welsh and half-German, has already stepped into the higher echelons of German society on the shoulders of his dead German war hero father. When war comes he is a well-placed officer.
The two wind up in Colditz. Tomasin is put there by an SS officer, in the hope that she will be raped by the officers detained there, causing dissension and an excuse to execute them. Instead, she turns herself into 'Tommie' dressing as a man and makes herself as invisible as possible. Peter is based in the castle for the work he is doing which involves Russians. We follow Tommie's struggles to navigate life in an all-male environment, and Peter being drawn into the German anti-Hitler resistance movement, with all the risks that entails.
This a deep and involved book with many characters who stand out from the pages as well-crafted individuals. It has a smorgasbord of everything a good book should have, intrigue, adventure, tension, philosophy, romance, friendship... I enjoyed the read and was disappointed when it stopped. And it did stop rather than end as this is the first book in a series of the kind that tells a single story across several volumes. Above all, it is wonderfully written and stands out for the quality of its prose.
I am no expert on the period, it feels convincing to its era in many ways. My only gripe is it does make a very obvious nod to modern issues and sensibilities. For example, seeing the line 'Hitler promises to make Germany great again' (though for all I know he said that) was a bit jarring. But then every book is the product of its era no matter if it delves into the past or the future for creative inspiration.
All in all, this is an excellent book and recommended reading.