I would more-so categorize this book as a mystery rather than a thriller. I think the writing was great, but I really had to push myself to finish this one. I felt it could have been 100 pages shorter and still explained the major plot points. The plot itself was great and pretty original. There are many trigger warnings though! I much preferred the present day plot versus the past plot. So I wish there was more of that. The characters were good and some were pretty likable.