The Diamond Caper

Join Crystal O'Mally, lover of teen mystery novels, and about to discover the reality is a bit more involved than her dreams of intrigue and fame.
The famous Alamo diamond has been stolen, and the list of suspects grows rapidly. The mysterious newcomers vanish, strangers appear in town, and three vandalizing teenagers are added to Crystal's detective notes.
Emma, Crystal's exuberant younger sister,joins her as her sidekick, winding up knee-deep in trouble. Minx, the cute guy from school, insists on helping Crystal with her investigation. There's just one problem... Crystal doesn't want any help. She wants to solve her first real case on her own.
Along the way, Crystal gathers the frightening attention of the thieves who leave her threatening messages and unwelcome surprises. Crystal is sure she is close to discovering the culprit, if only the police would take her seriously... before the unsavory thieves commit an even more ominous crime.