This is the new column in TNR’s weekly series of "Mad Men" episode recaps. Caution: It contains spoilers. Click here for last week's review. Except for the lamentable absence of Roger Sterling, "The Summer Man" was one of just two true ensemble episodes this season (the debut was the other). Characters that are usually locked into their own narrative boxes broke free and roamed through one another's territory; the show even managed to integrate Don and Betty's worlds, previously as rigidly demarcated as North and South Korea.