VIDEO: Check out another peek from Oprah's interview with the Houston Family

In this clip Pat Houston (Whitney's Sister in Law) and Oprah are talking about the pre-Grammy Party that she attended with Whitney. But that is where the conversation cuts off and you will have to watch tomorrow night to find out what happen with them inside the party.

 and then there was Bobby Brown as Oprah delves deeper to find out the truth about Whitney's relationship with Bobby Brown and whether or not he was truly the cause of her drug addiction.