The Mailbox by Audrey Shafer

Have you ever had a secret? Have you ever had a secret that your life depended on? Gabe has a secret alright. It seemed like everything was finally working out for him. After spending years in foster care after his single mother died, Social Services found Gabe’s Uncle Vernon who agreed to adopt him. Gabe had a real home.

When Gabe returns home after his first day of sixth grade he arrives to a horrifying discovery. Uncle Vernon is dead. Gabe has no idea what to do, so he does nothing. Gabe goes to school the next day, only when he returns home again his uncle’s body is missing…that’s when the creepy and puzzling letters begin to appear in the mailbox. Follow Gabe on his journey to keep his life together while he uncovers the many mysteries of his past and faces the uncertainty of his future.