Board Thread:Episode Discussion/@comment-34633327-20171118002715/@comment-10390252-20171120170727

Not 'know', not consciously anyway. I suspect that he has access to all of Ozpin's memories but he has to know what he's trying to remember before he can access that information. That's why Raven's talk with Yang and Weiss is so important. As they tell their story, Oscar will know what questions to ask the memories in his head. Then we'll know more about what specifically happened to Raven and why she is so sure Ozpin is a black hat.