The Curious Incident of the Dog in the Night-Time by Mark Haddon. A crime story told from the point-of-view of an autistic boy. His perceptions are as, or more, fascinating than solving the crime! My favorite Mark Haddon book.
The Lying Game book in the series by Sara Shepard. If you like Pretty Little Liars, you'll Love this book, too. I just wish the series was shorter so it didn't take so long to verify who the murderer is!
When hard-boiled, seventeen-year-old private investigator Dalton Rev transfers to Salt River High to solve the case of a dead student, he has his hands full trying to outwit the police, negotiate the school's social hierarchy, and get paid.