investigative journalism. we authenticated the female voice is oksana and the male voice is mel gibson. >> all of the snippets, is this one recording or evening or over several days? >> if you listen to it in its entirety it's obviously more than one phone call. you hear the phone ring. oksana talk a breath before she answers the phone. it's not one continuous conversation but a string together. >> shawn robinson, what's the latest? we haven't heard anything verifying that's him. >> you think if it weren't him he would say that ain't me. >> so the nondenial is really telling, isn't it? >> absolutely. i think it's obvious that if this is his girlfriend recording these messages, i think we're pretty sure this is him. also, nobody has seen him. he's not been anywhere.