12 True-Crime Docs on Amazon Prime Video You Might Lose Sleep Over

In this heart-wrenching documentary, filmmaker Kurt Kuenne tells the story of his childhood friend Andrew Bagby, who was murdered by his pregnant ex-girlfriend, Shirley Turner. Through a series of interviews with the people who were closest to Bagby, "Dear Zachary" unravels the complicated custody battle between Bagby's killer and his grieving parents, while serving as a cinematic scrapbook for the son who never got the chance to know him.

Watch "Dear Zachary: A Letter to a Son About His Father" on Amazon Prime.