The Faraway Truth by Janae Marks

From debut author Janae Marks comes a warm, wise and captivating mystery full of heart, as one girl searches for the truth in the face of great opposition.

Zoe Washington never met her father, who was sent to prison right before she was born. When she receives a letter from him on her twelfth birthday, it's a huge surprise.
Zoe's mom always told her that Marcus was a liar, a monster, but he sounds ... nice. Zoe starts to investigate the crime - and the deeper she digs, the more she doubt the conviction.

Is her father innocent? Or is he a liar?

Zoe is determined to find out.