Last week’s Mad Men had some really arresting scenes in its freewheeling story line, including a shocking scene involving deluded self-mutilation. (What was in the box that was given as a gift to Elisabeth Moss’s Peggy? Yikes.) But there also was another impulsive act in last week’s show: a steamy Ménage a trois, featuring Don (Jon Hamm), his wife Megan (Jessica Paré), and Megan’s actress friend Amy (Jenny Wade from Reaper). Everyone seemed to regret it the next morning – some more than others – and the fallout from that should continue in tonight’s episode.