Once known for its problem novels and teen melodrama, young adult fiction has developed into one of the most complex and extensive genres in literature. 2011 brought us a wealth of new reads that continue to twist traditional formulas and take risks that are, by and large, paying off with wholly unique reading experiences. A love story at the heart of a horror novel — why not? Mythical water horses in the modern world — sounds exciting. A theatrical fantasy populated with Shakespearean and fairy tale characters alike — oh, the possibilities! But no matter how varied the young adult genre becomes, today's best teen reads have one thing in common: their emotional depth, believable characters and suspense-filled storylines will keep readers of any age tearing through the pages, as proven by these five exemplary novels.