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I am giving this one 5 stars because it was a blast to read. I finished it all in one sitting and freaking loved every moment of it. I could read locked-room mysteries all day, every day and never get bored. This one was well written. Well paced. Creepy. Had a suitably atmospheric setting. Plenty of twists and turns. A good mix of likable and annoying characters. And the ending was a crazy ride!