"I promised Dad I will find her" -- 13 years after her little sister disappeared, online detective Shelly Nagle receives a notification from an anonymous Facebook account, with a disturbing message reading “She’s still alive, but you’ll never see her again”. When the police refuse to investigate, Shelly knows it’s up to her to find her sister and the man responsible for her disappearance: a killer who is now watching her every move. To help support Shelly and her family, click the link here for their petition: https://bit.ly/3RuwbZO To learn more about Shelly & Sherry’s story, read their book here: https://amzn.to/3EPwgj7 Thanks to Riyandi Kusuma for the music in the opening: "Happy Birthday Piano - Horror Version (2019)" External footage from: "ID", "Britespark", "Welcome To Murder Town", "Buried Deep", "A&E", "Blumhouse", "Cold Case Files: Missing In Altoona", "NBC", "WJAC", "6NEWS: Father-In-Law Pleads Guilty", "CBS", "WTAK", "WTAJ NEWS: Leighty Mistery Solved".