A ThrillerAudiobook CD - 2017
Four years ago, fifteen-year-old Ellen was abducted and strangled. Her younger brother, Ben, a math geek too smart for high school, is now committed to finding the monster who killed her.
Publisher: [New York] : HarperCollins, 
Characteristics: 16 audio discs (19 hr.) : CD audio, digital ; 4 3/4 in digital,optical,rda audio file,CD audio,rda