The fate of Peggy’s baby boy was initially left ambiguous in Mad Men, but the show later provided a more solid confirmation about what happened to her son. For the most part, Peggy’s arc in Mad Men was the empowering tale of an ambitious young woman navigating a male-dominated workplace. She transcended the steno pool to join the creative team and stuck up for herself and earned her seat at the table every step of the way. Peggy was so successful in such a short space of time that it caused Joan to resent her.