Digital evidence leads to clues in death of two friends who were drugged and dumped outside LA hospitals by masked men

Hilda Marcela Arzola-Plascencia, a doctor in Durango, Mexico, was used to handling medical emergencies. But nothing prepared her for the call she got about her eldest daughter and namesake Hilda Marcela Cabrales.

Dr. Hilda Marcela Arzola-Plascencia: I received the phone call in the middle of the night saying that she was so ill, she was very bad, she was intubated.

The 26-year-old architect was fighting for her life in the ICU at Kaiser Permanente Hospital in Los Angeles.