In this episode of True Crime Sleep Stories, we explore the unsolved 1987 disappearance of 16-year-old Theresa Ann Bier from Fresno, California. What began as an exciting day trip into the Sierra Nevada mountains—searching for the legendary Bigfoot—ended in mystery when the man she went with returned alone with shifting stories that eventually settled on an extraordinary claim:
Bigfoot had taken her to join a hidden colony in underground caves.

No trace of Theresa was ever found in the vast, remote wilderness near Shuteye Peak and Ghost Canyon. No body, no definitive evidence, and no resolution after nearly four decades. This episode moves through her troubled early life, the chaotic circumstances leading to the trip, the bizarre investigation, and the lingering questions

If you have any information—no matter how small—about Theresa Ann Bier's disappearance, please contact the Fresno Police Department at 559-498-1265. Even tips from decades ago could provide closure.

Next time: Another chilling tale from the shadows… drift off with us again soon.

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