and he told me gelareh bagherzadeh is dead. it's like, it sounds weird, but, i was thinking maybe she was just in a car accident or something. not that she was just gone. >> what happens next? >> i go into their house and her mom is just a wreck. >> gelareh bagherzadeh parents, ebrahim bagherzadeh and monireh zangeneh. >> you're remembering? >> what are you thinking about? >> i couldn't believe -- >> what did you think that happened? >> we didn't know. she does not have any enemies. >> grief and questions were fighting for space in everyone's heads. and not one single answer would come easily. >> coming up -- >> detectives focus on gelareh bagherzadeh friend robeen bandar who turned out, was also her ex. >> they grabbed me and put me in the back of the patrol car. i remember calling a friend and telling them, if you don't hear from me by tomorrow, you know, look for me. because i sense something's wrong >> and that you're going to be blamed for it? >> possibly. >> when dateline continues. for up to 100% leak-free and odor-free