in the very beginning of the series in episode 1. He gave a sinister lil grin after Naz confronted them about the crazy comment Boddie made. This was right before Naz and the chick walked up the stairs.

That grin or smirk made me think he was familiar with her. Then, recall the cat was let out of that basement door. Dude broke into the house through that door; crept upstairs, and shanked her like Little Puppet was in "American Me". All of that was done while Naz was passed out.

I have been waiting to hear that another set of prints were prevalent at the scene.