Haunting and captivation, Shelter is a book that will appeal to fans of action books. It was written by an adult author (Harlan Coben) so it is mature, though aimed at a teenage audience. The novel follows Mickey Bolitar, the nephew of Coben's world-famous character Myron Bolitar. This book is action filled, packed with twists and turns. This is one of the best books I have ever read.