A little more than halfway through the season, it’s here: Presumed Innocent’s supporting-character episode. We’re on the eve of Rusty’s murder trial, and it’s about time we get to the bottom of the inexhaustible well of hatred that fuels Tommy Molto. The “supporting-character episode” has been a staple of the television series since TV has been TV; some of my favorites in the genre include Marnie and Charlie’s Central Park episode in Lena Dunham’s Girls and the...