I'm fascinated by Daniel's character arc. He's precariously close to being forced into a decision as to whether he throws BB under the bus or to court with danger. Buck very much has his number, so it'll be interesting to see where they go. They've portrayed him thus far as being a slimy little weasel, so I didn't have him pegged down for any kind of redemption arc.
This whole episode was worth is though just to witness an acting masterclass from Vincent D'Onofrio.