The Moonstone (Penquin Classics)

Almost everyone covets a single, priceless yellow diamond in this classic story considered by many to be the first mystery novel. In The Moonstone, the diamond, originally looted from an Indian temple, ends up bequeathed to Rachel Verinder. She receives the diamond on her 18th birthday but someone villainously steals it again that very night. Everyone is a suspect as Sergeants Cuff and Franklin piece together this puzzling crime.