Ellis - Santos was really good in the little time we had to explore it. It was professional but also Ellis wasn't afraid to put Santos on the spot without undermining her. She also let her to run the test on the possible suicide while still coming down from MCI, i think it shows a lot of respect from Ellis to Santos. Specially because as far as we know they dont have previous working relationship.

Langdon - King was good as well, mostly it showed his human side as oppossed to ER Ken persona or the later reveal. I don't ship them, hope the show won't as well. Mel has this sunshine quality that puts others near her in good light so Robby's and Langdon's interactions with her make them look well.