it was football season. >> they focused more and more attention on pedro bravo and his wobbly story. apartment. what did they find stached way up in pedro's closet. we find christian's backpack hidden in pedro's back back in a suitcase. >> it was very well hidden. we thought this is pedro trying to cover up. >> pedro has gone from being a person of interest to a suspect? >> yes. it was very quickly. it is hard to swallow something that huge. this is somebody you've known for so long. >> erika had to face the possibility that maybe she and christian hadn't been so good. maybe pedro had known and it sent them over the edge. >> i overheard the officers discussing like a love, jealous rage kind of thing, like a love triangle i think they had said. >> how did you bare up with that? is. >> i didn't want to think of that. i couldn't imagine somebody doing something so horrible. >> they processed his suv, there it was, blood. now they believe he hasn't just punched out christian, they believe he killed him. a week after, he was charged with first degree murder. >> with the blood evidence, the