Chapter 4

"My hands trembled as I picked up the thin sheet of paper." Ever since Lily can remember, she and Olly have been best friends, but 1 week after she turns 16, he leaves with no explanation other than a note. Not only has Olly gone,when he retuns 4 years later he acts like nothing's happened. What happened that made Olly have to go? Go with out leaving any mobile number or address?