anyone saw maribel, the night she was caught on camera paying the rent, which k.c. said was what they were arguing about. >> well, what happened? tell me about that. >> because i was -- i'm supposed to move out. >> it turned out k.c. had recently lost his job and could no longer pay his share of the rent. maribel had asked him to move out. that was reason for concern, of course. and so was this. detective ramirez had learned about the 911 call maribel had made 11 days before she disappeared. and he knew that in that call the man maribel said that she might have to kill was k.c. joy. >> his full name is kwang choi joy. >> weren't the police out to your house recently because you guys had an argument?