17-year-old Jessica is missing. There are no clues as to why she disappeared – apart from the note she left behind: I love you. Goodbye forever. It turns out that Jessica is not the first teenager to have gone missing, nor the first to have left exactly the same note. With a personal family connection to the missing girl, crime blogger and radio host Kit Doyle is determined to find out what happened to her. To do so, she must go undercover as a teenage runaway herself. Out on the streets, Kit is about to enter a violent, unpredictable world where life is held cheap – and into the clutches of a dangerous psychopath …