The Christy Sisters and the Case of the Hidden Ring

Two high-school Nancy Drew style detectives begin investigating a small mystery, perhaps the disappearance of a school trophy or something equally banal, only to watch it spiral insanely out of control and lead them into an enormous and very adult conspiracy involving sex-trafficking.  The girls emphatically resist involving the authorities as they want to solve the case themselves, but eventually they have no choice.  The trafficking ring is successfully disbanded, but the girls’ innocence is lost.