Did Naz kill Andrea?
More than any other question, this is the one we've been obsessing over. One of the show's most engrossing qualities has been the way it plays with the viewer's perception of Naz, introducing him as a quiet, mild-mannered kid in the pilot and slowly revealing his darker edges with each subsequent episode as he struggles to survive in the nightmare-like confines of Rikers Island. It's been a harrowing journey for Naz. Those bad finger tattoos won't come off. Whether he's guilty or not, Naz will emerge from this ordeal a changed man.
While the hypothetical resolutions to the case are endless, there's really only two options here: he either did it or he didn't. However, a cursory understanding of the American justice system suggests that actually committing a crime and being found guilty in a court of law are two different things. After last week's episode, things are actually looking up for Naz a bit, and it increasingly feels like he will be found innocent, but it's safe to assume the ending will still contain some note of ambiguity or mystery.
One possibility is that Naz could be found innocent in the murder of Andrea but subsequently be charged as an accessory in the brutal murder of his fellow prisoner Victor, which ended last week's episode. That type of harsh ending would not be a stretch for a show that has prided itself on exploring the twisted ironies and horrors of the criminal justice system. It would also explain why we've spent so much time with Michael K. Williams' character, Freddy Knight: he's a part of the endgame.
Another potentially depressing ending: Naz gets off, but when free comes to the realization that he actually did kill Andrea while he was blacked out. The many quick, fragment-like flashbacks in last week's episode hint that we could see the missing pieces of Naz's memory. That type of dark, downbeat ending would undoubtedly infuriate some fans -- plus, it would play into the racism that's spurred violent retribution against Pakistani cab drivers -- but it would fit with the show's overall bleak tone.
One path that seems especially unlikely: the Scooby Doo ending. Though it would be cool to see Naz peel a rubber mask off someone.