Dear Zachary: A Letter to a Son About His Father

In 2001, 28-year-old Dr. Andrew Bagby is found dead in a park in Pennsylvania. He had been shot by his ex-girlfriend, who then fled to Canada, where she was able to walk free on bail, pregnant with Andrew's child. Andrew's enraged parents campaign to gain custody of the child and convict their son's killer. Filmmaker Kurt Kuenne pairs this story with home movies and interviews with those who knew Andrew, hoping to give his best friend's son an opportunity to discover who his dad was.