sam's tutor and friend, julie kibuishi. parents. >> i think i was screaming, no. that's not my daughter. it's not my daughter. >> julie had been shot twice in the head. her pants were down and someone had written on her sweatshirt the word all yours. police found julie's phone in the apartment and saw those weird texts sam had sent her. they learned about his combat tour and how he some high had night terrors. when police searched his name in their database, they found something sam in friends already knew. >> he had done some jail time. >> in 2002 at 18, sam herr was charged in the murder of another teenager. he was acquitted for sam in dad knew in hindsight, it did not look good. that didn't buy you a lot of rhythm from law enforcement? >> no. i understood that. it was imperative to start looking immediately. >> he wanted to find is son to prove he was innocent. the orange county prosecutor also wanted to find sam quickly for entirely different reasons. >> he has a dead woman in his apartment and he's missing. you factor