Sierra Mae LaMar was a 15-year-old high school student living in Morgan Hill, California with her mom and her mom’s boyfriend when, completely unexpectedly, she disappeared. Though at first the police thought she may have run away, due to her being unhappy with living in Morgan Hill, evidence quickly suggested otherwise. Over the course of a few days, her cell phone and personal belongings were found, which suggested that she had been taken against her own will. And that is exactly what happened. DNA linked her abduction to a 21-year-old guy named Antolin Garcia-Torres, who was eventually arrested for her kidnapping and murder. Unfortunately, to this day, her remains have never been found.