morning hours of February 9, 2014, 17-year-old Lexi Sachs was asleep in her bed, inside of her parents' mansion in San Juan Capistrano, California – one of the nicest and most affluent neighborhoods in the country. And as she lay there, suddenly there was a loud bang on her door that woke her up. Instinctively, Lexi just pulled the covers up over her head like she did when she was a little kid and was scared. As she lay there, she held her breath, hoping the sound she just heard was in her dream, and not in real life. But then, she heard her little brother screaming in the hallway. At that point, Lexi threw off the covers and ran out of her room. And what she found at the end of the hallway would not only turn her life upside down