The gap between Don & Betsy is now a chasm: Two Nasty People

Though I'm not nuts about the complex plot line in "Mad Men" that explores Don Draper's mysterious past, it is a ticking time bomb that eventually will have to explode, and the ticking gets louder in episode 10 of Season 3, as Betsy discovers that box in which Don (improbably?) retains revelatory documents: a divorce certificate, dog tags, childhood pictures. Don - now fully engaged in yet another affair and betrayal, this time with the hot young elementary-school teacher, who will inevitably bring him Fatal Attraction-like trouble - is oblivious to Betsy's discovery, or basically to anything about Betsy. Granted, she's so cold all the time it's hard for anyone to know when she might be angry. But eventually she's going to have to tell him what she's found and ask for an explanation. She still seems weirdly drawn to the gubernatorial advisor - calling him out of the blue, then feeling guilty - and we have to suspect she will throw herself at him eventually. She will want to get back at Don for sure. Less happening at the ad agency this episode, with some of the main characters not appearing at all. But we do learn that the Brits are trying to sell Sterling-Cooper. All told, a quieter episode than some, but a lot of tension is building, as the gap between Don and Betsy widens into a chasm. You keep wanting to like one or the other of them, but they keep betraying your hopes at every turn - they're two nasty people who maybe deserve each other. Don even getting more nasty at work, bullying his staff and curt with everyone else.