Just about as strong as its first part. I glossed over it last review but I just love the aesthetics of these two episodes. Everything really has the feel of the Apollo program, and the Silence really mesh well with this as they evoke the Men in Black conspiracy. Mark Sheppard is an awesome one-off companion and is super memorable here. And that moment where the Silence broadcast their message, "You should kill us all on sight" is easily one of my all time favourite Doctor Who moments. The episode starts off a little off-kilter and over the top, but it really nails the ending and sets up a good mystery to drive the rest of Season 6.