A lot of time has passed since I read the last book in the series, taking some time to re-read it probably would've helped me get my bearings. But the plot was good, although I admit that it distracts me when the story flips between a past mystery and a current time mystery. But that's just me and my ADHD-addled attention span. Both mysteries were interesting although I felt the conclusion to the Ragna mystery felt a little rushed. It was a good read, though, I couldn't put it down.