Most anyone would have deleted the message, thinking that someone, somewhere was sitting on a phone, or perhaps a child had the phone and was just punching random letters. But not Bailey Scott, a young teenage girl with an IQ in the genius range. She notices patterns in the jumbled letters that could not have been formed by accident. With the help of her best friend, Jennifer, she finds the message only moderately challenging. What she discovers, however, is a gruesome plot that ultimately leads Bailey, Jennifer, and two other friends into the arms of the man the CIA calls ""The Ghost.""