erika friman: confused-- pain. there was just pain in their eyes. urphy: but erika says they were all about to channel that pain into determination, with more friends heading up from miami. erika friman: i had a whole group of individuals who were now just as concerned as i was, just as focused as i was, just as driven to find christian. i didn't feel so alone once they got there. i felt we're gonna find him, we can do this. dennis murphy: christian's family and friends were hopeful he'd turn up...and soon. and for officer peck, the case of the missing student got more baffling when he 'caught wind' of a secret--- christian had been trying to hide something. was his secret the key to finding him? officer peck: there's something else going on here that--i'm not aware of, but what exactly that is i'm not sure. craig melvin: coming up tim peck: do you know christian? erika friman: yeah. yeah. tim peck: how do you know him? erika friman: i was just concerned that i was going to push him off the edge. craig melvin: when dateline continues. dry eyes still

erika friman: it's so difficult, sometimes to think of it that way. i would still give anything for christian to be here. there's not going to be another joke he tells or a smile i see when i look up from working or something. it's not going to happen again. they're just memories. craig melvin: that's all for this edition of dateline. i'm craig melvin. thank you for watching. >> good morning and welcome to this saturday edition of morning joe weekend. it was a busy week, as we are now just days away from donald trump's return to the oval office. let's get right to some of the conversations you might have missed. >> i'm curious what you thought. as a man who has known joe biden for many, many, many years, including through this presidency, what you saw on his face, what you heard in his voice last night. >> you i heard in his voice last night was a concern, a legitimate concern. he outlined a potential oligarchy trying to dominate politics and certainly dominating our economy. i mean, there were 25 billionaires in america ten years ago, and now there a