The CSI team investigate a murder at a high stakes poker game.

Don comes up with a big idea, Roger asks Joan to help him fix a clerical error and Peggy has difficulties casting for a commercial.

Peggy receives a bouquet of flowers at the office. Pete navigates the politics of new business. Joan is put in an impossibly awkward situation.

Don takes an impromptu trip. Betty has lunch with a friend. Harry lobbies for a cause. The partners consider a questionable asset.

Sterling Cooper & Partners prepares for a guest; Don contacts an old friend; Roger deals with problems at home; Peggy is underestimated.

Don receives a troubling letter. A risky venture entails a new future for Peggy. Roger gets an unexpected phone call. Pete butts heads with Cutler.

Don makes a new friend. Joan meets a client for drinks. Peggy hears impressive new work. Roger has a puzzling phone call.

With his personal and professional life crumbling around him, Don positions himself for a change of scenery. Meanwhile, Pete’s life is falling apart as well, thanks to the meddling of…

Set among the events surrounding Martin Luther King’s assassination, Peggy tries to get a new apartment, Ginsberg is set up on a date, and Don has a revelation during his…

The creative department has a wild, drug-influenced weekend as they work on the Chevy account, Don has trouble letting go of Sylvia, and Sally walks in on an unwelcome intruder.

Cutler and Chaough prepare to make radical changes to the firm while Sterling and Draper are visiting a client in Los Angeles. Joan’s decision to go after a new account…

Don is preoccupied with keeping Sylvia’s son from being drafted, Peggy has a rat in her apartment, Don and Ted bury the hatchet, Pete has a problem with his mother’s…

Don strikes up a friendship with the surgeon in his building, Peggy tries to save her campaign, Roger makes a scene at his mother’s funeral, and Betty goes to Manhattan…

Pete asks Joan to make a personal and moral sacrifice to ensure the company lands the Jaguar account. Don becomes furious after learning of the impact Megan’s new profession will…

Roger seeks to expand his affair with Megan’s mother. Pete has a “last” encounter with Beth with lasting repercussions. Megan struggles to find acting work and asks for Don’s help…

Don works in secret on a Heinz ketchup campaign while Megan gets a love scene on the set of her soap opera. Meanwhile, Harry makes his power play while Joan…

Don and Megan take a trip to Hawaii for the holidays, Sally’s friend visits the Francis family, a comedian torpedoes Peggy’s Super Bowl ad campaign, and Roger gets some bad…

Harry finds himself in an uncomfortable position after reconnecting with Paul Kinsey who has joined the Hare Krishnas. Lane takes drastic and unethical measures to get out of financial trouble….

Peggy has a tough time during a particularly formidable pitch. Don calls on a potential client. Roger and Jane have an experience with LSD.

Megan has second thoughts about her future at Sterling, Cooper, Draper, Pryce. Peggy lashes out when she’s inadvertently put in the uncomfortable position of having to lie. Pete’s effort to…

As Sterling Cooper Draper Pryce tries to build upon its current business, Peggy is given new responsibility. Don and Harry indulge a client. Betty contemplates her mortality after seeing a…

Don has an encounter with someone from the past. Meanwhile, Roger increases Peggy’s workload, and Joan comes to a momentous decision.

Lane attempts to land an account with Jaguar Cars, leading to a altercation with Pete. Pete and Trudy host a dinner party in the suburbs.