Don continues to conceal his increasingly complicated personal life. Peggy (Elisabeth Moss) pines for the absent Pete.

Pete returns from his honeymoon. Don’s business relationship with Rachel takes an unforeseen turn.

While facing pressure from his wife, Pete further alienates Don and endangers his own position at Sterling Cooper.

Don wins an award and must deal with the fallout. Ken gets a story published. Peggy overhears a startling conversation.

An office romance is revealed. Peggy proves to be more than a secretary. Rachel faces her conflicted feelings for Don.

Roger's behavior leads to a rift in his friendship with Don. Pete faces trouble at home.

Don’s past haunts him. Peggy's success threatens her office relationship. Salvatore gets too close with a client.

A rival ad agency courts Don. The presidential campaign heats up. Tempers flare over Peggy.

Don loses an account. Roger attempts to cheer him up. Joan has a night out on the town with her roommate.

Peggy is given a difficult assignment. Roger provides opportunities for Don. Pete grows frustrated.

Sterling Cooper staff pulls an all-nighter on election night. Pete's ambitions cause him to directly challenge Don.

Don's work interferes with his domestic life. Peggy is given a new opportunity. Betty makes a startling discovery.