“A military trial of civilians is an atrocity…” Now isn’t that quaint? Union war hero James McAvoy finds himself reluctantly defending Robin Wright (a.k.a. Mary Surratt), a possible accessory to the assassination of Abraham Lincoln, in the trailer for Robert Redford’s The Conspirator, also with Kevin Kline, Justin Long, Alexis Bledel, Evan Rachel Wood, Colm Meaney, Danny Huston, and Tom Wilkinson. Here’s hoping the historical setting here can ease the didacticism that marred Lions for Lambs.