his name was brad holzer. >> he would know where she was. brad lived with his soon to be ex-wife less than five minutes away from susie's apartment. val drove over and knocked on the door. >> i said, susie's not home. we can't find her. she's not answering our calls and we're all really worried. and i remember exactly what he said to me. he said, what do you mean she isn't home? i dropped her off at 5 am. that's when it hit that we're going to the police, something 's not right. >> it certainly wasn't. a man whose marriage was breaking up, the last man to be with her, didn't know a thing? really? >> coming up. susie's new boyfriend fields a few questions down at the station. >> did you guys make out or anything, before -- >> probably five minutes, yeah. >> before she exited the truck? >> yeah. >> did you ever wonder about brad and whether if he was capable of any bad thing? >> when she went missing and i wondered about everybody. everybody was a suspect. >> when dateline continues. with dupixent, i can du more... crazy commutes... crowd contr