In this episode of Mad Men
, "Lost Horizon," Don runs away from his troubles once again, Peggy and Roger drink and roller skate the day away, and Joan finally reaches her breaking point, with shocking consequences.
This is a big, and heartbreaking, episode for the Mad Women on the show. With Don out on another walkabout and most of the side characters off the scene, the episode becomes a vehicle for Joan and Peggy's stories. The focus on the women and their struggles to start over at a new agency mesh well with some of the hour's horror movie trappings.