>> around 10:30. >> where had brooke wilberger gone? why couldn't anyone find her? brooke's mom was about to learn of her daughter's disappearance in a phone call with one of her sons. >> i said, where is brooke? and he said, we don't know. i said, what do you mean you don't know? he goes, we don't know where she is. i said, spence, don't tease me. what are you talking about? and he said, no, seriously, mom. we can't find her. and right then, i just had this chill go through my whole body. >>> coming up, a whole community turns out to search for brooke while the police start their investigation by focusing on her family. >> stephanie was just grilled about, you know, where was she? did you do it? >> when "bringing brooke home" continues. >>> on a sunny, spring day in corvallis, oregon, the clock was ticking. 19-year-old brooke wilberger had disappeared about 10:30 a.m. as she worked, cleaning lampposts in the parking lot of the oak park apartments. just a block away from the bustling campus of oregon state university. at 1:00 p.m., her sister stephanie got worried wh