The Cousins by Karen M. McManus is an amazing young adult mystery, filled with plot twists and turns. Three cousins who haven’t seen each other in years are suddenly sent away to work at a hotel for the summer, following a letter from the owner of the hotel: their wealthy grandmother. Milly, Aubrey, and Jonah are all around the same age, but their parents hardly communicate, causing them to be complete strangers to one-another. The last their parents saw of their mother was weeks before they were all disowned, with a mysterious note from her lawyer. When Milly, Aubrey, and Jonah received their letters, their parents jumped at the opportunity, hoping they would mend things with their grandmother and receive parts of the family fortune, but all is not as it had appeared. The book is written from the point of view of each cousin, alternating chapter by chapter. I had high hopes for this book when I first got it, and it exceeded my expectations. It is an intricately written novel with many hidden hints at what is to come. I would recommend this book for readers ages 13 and up. At the end of the book, all loose ends are tied up, leaving for a very satisfying read. The Cousins easily lives up to the high bar set by Karen M. McManus’s other mystery novels.