New Documentary “Family Secrets: The Disappearance Of Alissa Turney” Premieres on Oxygen True Crime Sunday, October 13 @ 8PM ET/PT [VIDEO]

Oxygen, the home of high-quality, true-crime programming, explores what happens when one unrelenting woman demands a thorough investigation of her sister’s vanishing and exhausts all traditional legal avenues. Turning to podcasting and social media, Sarah Turney sparks an inescapable grassroots campaign, resulting in an arrest and a trial, but not peace of mind.

“Family Secrets: The Disappearance of Alissa Turney” premieres Sunday, October 13 @ 8PM ET/PT on Oxygen True Crime.

Peacock will stream an extended version of “Family Secrets: The Disappearance of Alissa Turney” beginning Tuesday, October 22.

The Voices for Justice Media founder Sarah Turney became a viral sensation when she posted suspicions on social media that her dad killed her sister, Alissa. Now Sarah gives unprecedented access to the continuation of her story, including a recently unearthed trove of home videos, as she re-examines her and Alissa’s childhood. Sarah makes chilling discoveries, breaking through years of manipulation to reconstruct the truth of the past and be free of her father’s influence. Sarah’s final conversation with her father is haunting and a testament to her tenacity and unending search for Alissa.

Peacock’s extended version of the documentary will include expanded and new sections. Notable footage includes Alissa’s friends providing intimate details of their friendship with her, an investigation of Sarah and Alissa’s father’s manipulative relationship with Alissa and other family members and friends, and a deeper look at Sarah’s advocacy on social media and through her podcasts, Voices for Justice and Media Pressure, which empowers victims of violence and their loved ones to speak out.

“As filmmakers, we wanted to explore the shifting nature of truth and how someone who had been groomed to believe one version of reality could relearn her own memories,” said directors Ricki Stern and Jesse Sweet, “We crafted the film to embody Sarah’s journey of excavating the truth about herself, her family and what happened to her sister. We are grateful to Sarah for welcoming us into her life and opening up her family archive in support of this vision.”

“Family Secrets: The Disappearance of Alissa Turney” is produced by Story Syndicate. Dan Cogan, Liz Garbus, Jon Bardin, Kate Barry, Mala Chapple, Ricki Stern, Jesse Sweet and Sarah Turney executive produce. Ricki Stern and Jesse Sweet direct.