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DaggerQuill
Since: Sep, 2016
cvv217
Since: Sep, 2017
shadowbeast
Since: Mar, 2015

I remember reading this book that featured these teenagers finding an abandoned shack on the beach, and inside the shack was a door that would send you back in time. I'm pretty sure the 80s were involved- either as the time period the book was set in or the time the door sends you back to. I don't really remember the plot, but it featured a guy tying a girl to a post in the middle of the ocean with a slashed wrist , so that sharks would smell the blood and kill her. A girl survives this treatment after getting rescued by fishermen, and uses the door to get revenge. This is all revealed in an expositional monologue/through flashback chapters , though- the main characters didn't know about that backstory. Any ideas on what this book could be?