Best: Esther Randolph
There was no way that Nuck wasn't going to get away scot-free from his murder trial, but we sure hope we haven't seen the last of dogged prosecutor Esther Randolph (Julianne Nicholson) just because of Nucky's dirty victory. Loosely based on U.S. Assistant Attorney General Mabel Walker Willebrandt, Esther stepped in to fill the absentee Van Alden's shoes as Nucky's opponent on the right side of the law, and she was actually much better at it. Driven and just plain good at her job, she also had whip-smart, dry sarcasm that kept up with Nucky's top notch quips. Please, Terrence Winter, let her thirst to put Nucky away keep her in AC next year.