The second and, unfortunately, last season of Vice Principals is going all the way Dallas. It’s a “Who shot J.R.?” for our buffoonish, blowhard, torn-down-villainous-Southerner age, with Danny McBride’s Neal Gamby teaming with Walton Goggins’ Lee Russell to hunt down whoever shot Gamby at the close of last season. Have a look at how it all goes down with this new trailer for series’ “final semester.” Our favorite irredeemable teachers will resume shouting at each other September 17.