We’ve waited for nearly a year for this. The second half of the final season (seriously, who splits up a season like that?) is upon us. Soon we’ll find out how tense the smoked-filled air in ST&P is and what becomes of Don, Roger, Pete, Joan and Peggy. Among my most burning questions: Will Betty ever crack a smile? In the meantime, let’s get in the proper mindset by peeking into some backstory tidbits.