If you check the episode reviews, some members were disappointed. This one was not. Every story since Genesis has a beginning, a middle and an end. The end is always the hardest part. This one was fine.
More interesting (to this reviewer) is that while watching Billions I could not help thinking of the larger issues:
1. Lewis keeps evolving as an actor. If you can, try to find a DVD of his early series LIFE where it is entirely his personal charm that moved the cop series along for its two season run. With Homeland, he took his career and his craft up a notch. By the time Billions rolls around, we take for granted his ability to take over a scene and mesmerize the viewer. But he worked at it. And worked hard.
2. Maggie Siff with hindsight now seemed lost in Sons of Anarchy, now that we know (from this show) what she is really capable of. I look forward to her next project, whatever it may be. Serious acting chops.
3. Critics have said that the hit series Deadwood can be considered in two ways -- either as pure entertainment, or as a metaphor for the formation of America, from chaos to order. I think that Billions in many ways is the natural sequel to Deadwood, showing us how the America we know has gone from chaos to order .... to outright greed. Just like the dialog Siff delivers in her final scene, we can kid ourselves all we want. But at the end of the day, this society is not exactly what we were hoping to grow up in.