1: The Scarlet Letter.

Senior year is supposed to be the best year. You're supposed to enjoy the freedom before you're thrusted into the independant life of a grown up.
Mandi Heart is the one exception. Her senior year has been nightmare after nightmare, heart ache after heart ache. Her boyfriend, Rafe Majury, of three years disappeared September 12th without a trace of evidence.
7 months later, an anonymous letter was sent to 5 teenagers telling them what to do to get Rafe back. They must go to secret locations to unlock the next location, but here's the catch, they have a week to complete this or he's dead, and each time they go to a location-- they have to listen to one of his dirty little secrets forced out of his own dirty little mouth.