As darkness fell over a Target parking lot in 1996, a chilling, sinister mystery unfolded. Sherri Dally—a gentle young mother in California—stepped out of the store, unaware that someone was lying in wait. A woman dressed in a security uniform approached her, whispered menacing words, and then escorted her away. That was the last time anyone saw Sherri alive. Days later, her broken, lifeless body was discovered at the bottom of a desolate ravine.