Despite already being in production, Jon Favreau's Cowboys and Aliens keeps adding new actors. Latest to arrive at the set is Abigail Spencer, who you may recognize as Don Draper's mistress from the last season of AMC's Mad Men.
According to the Heat Vision blog, Spencer will play a prostitute and former lover of Daniel Craig's character "who makes him change his ways." I foresee a death scene in Spencer's future, somehow.
Cowboys and Aliens is due for release July 29, 2011.