Mystic River Novel by Dennis LehanePremium Off White Cream Pages Stitched Binding Matte Cover Local Premium Copy Language English Dimensions 5. 5 x 8. 26 inches Pages Amount 490 Summary Mystic River is a highly acclaimed, New York Times bestselling novel by Dennis Lehane, first published in February 2001. It is a psychological thriller and a profound exploration of how past trauma, guilt, and the desire for vengeance shape human lives in a working class Boston neighborhood.