Leave No Trace is an interesting enough story and maybe my definition of a thriller is different than the author's, but I didn't find one here. There is suspense and quite a lot of dangling carrots throughout that hint at answers, but the pacing is very slow and those answers take their sweet time coming. I realize this is fiction and certain allowances can be made, but this one requires more suspension of disbelief than what I would consider reasonable. To make matters worse, I didn't find Maya particularly interesting. She's rather bland as far as a protagonist goes, other than the sheer number of times she manages to be hurt by Lucas in his many attempts to escape. And that's just one thing that stretched the imagination. I can't imagine a speech therapist being left alone with a dangerous or violent patient even once, let alone repeatedly. The only saving grace in this one for me was Josiah. His chapters are very well done and are quite compelling, but about halfway through, I realized I was just plunging through hoping for another of his chapters. The author does have talent, but this one missed the mark for me.