In this episode, we explore the mysterious case of Theresa Ann Bier, a 16-year-old girl who vanished on June 1, 1987, in the Bass Lake area of the Sierra Nevada mountains in California. Theresa had a troubled childhood, facing abuse from her mother and spending time in foster care before moving to Southern California to live with her father, David Bier, and stepmother, Margie Richmond. There, she also experienced alleged abuse.

On the day of her disappearance, Theresa planned to search for Bigfoot with Russell "Skip" Welch. She was last seen around 7:20 PM. Welch later claimed that Bigfoot had abducted Theresa, leading to suspicions of foul play. Despite extensive search efforts, no trace of Theresa was found. Welch was charged with her abduction, but the case was dismissed due to a lack of evidence.

The impact of Theresa's disappearance was profound on her family, who have endured ongoing hope and frustration. The case attracted significant media attention and public interest over the years. Despite various theories, including potential kidnapping, murder, or that Theresa ran off into the woods, her case remains unsolved.

We conclude by reflecting on this intriguing and tragic case, emphasizing the enduring mystery of Theresa Ann Bier's disappearance, and encouraging listeners to share any information they might have.