While it is very similar plot-wise to Room, this lacks the emotional impact & intensity of that novel, perhaps because it's pitched as YA. The narrative voice, which is such a tour de force in Room, here is inauthentic & inconsistent. There's a shallowness to it as well as a few niggly plot holes that prevents full engagement & restricted empathy. Moreover, I just don't believe in it. Drags in places & is a little repetitive. OK but only just OK.