3,5* rounded to 4
It's a very slow burning mystery and I nearly DNFed (at about 50%) when the plot became gripping and read the rest in one setting
The characters are interesting and well developed, the historical background is realistic and fascinating, the solid mystery kept me guessing.
It's not a book I'd recommend if you want a fast paced and action packed story.
Many thanks to the publisher and Edelweiss for this ARC, all opinions are mine