Cameron (Theo James) and his wife, Daphne, have a very strange relationship. On the surface, they're the world's happiest couple, but, as Harper (Aubrey Plaza) eventually uncovers, there are a lot of lies and mistruths underneath. And in episode six, Harper — intentionally or unintentionally — makes her husband Ethan (Will Sharpe) think she and Cameron hooked up behind his back.
Ethan did snap and attack Cameron in the season finale, but he didn't kill his friend.