After Asylum I was hoping this series would find its legs, and Sanctum did that. Throughout the book I was wondering who was behind what, and while one or two people were obvious, I wasn't expecting some. This book gets deeper in to the history of the Warden and the town, and kept me wanting to find out more. My only issue was what felt like a rushed ending. All this build up and it was just over, which just left me a tad bit wishing for more. 3.75 out of 5.