Who owns the agency
16 episodes of Mad Men carry this thread, 16h in all — 16 of them are in The Essentials.
researched-verified
This page runs the whole series and shows episode details, including late ones. If you have not seen the show, start from the show page instead — the path reader hides what is ahead of you.
In airing order

Don takes a business trip to Los Angeles, where he hooks up with some interesting new acquaintances; Peggy's in the mood for an office romance; Duck contemplates the future at Sterling Cooper.

As the second season ends, things get bumpy at Sterling Cooper while Don is away; Betty receives some upsetting news.

In the third-season opener, Pete and Ken are among those affected by the corporate changes at the firm. Meanwhile, Sal accompanies Don on a business trip to Baltimore, where both men succumb to the powers of persuasive seduction.

A surprise visitor shows up at Sterling Cooper; Sally gets spooked by something (or someone); and Joan is the recipient of some surprising news.

In the third-season finale, Don has a pivotal meeting with Connie (Chelcie Ross); Betty is the beneficiary of some interesting advice; and Pete has a serious sit-down with some clients.

Betty is a bit unsettled when a surprise visitor stops at the Francis home.

An all-hands meeting is called at Sterling Cooper Draper Pryce, and the gossip starts to fly about an important client leaving the agency and that possibly more will follow. Meanwhile, a competing firm attempts to poach select SCDP employees; Peggy has a passionate romp with Abe and later tries her hand at wooing the Playtex people.

While trying to navigate a crisis, Don encounters an old friend.

Don deals with a challenging pitch, while Peggy ponders taking a trip.

Roger changes tack to make new business; Pete has an awkward run-in with a client.

The agency works to keep a client; Joan is caught off guard.

In the series 6 finale, Don has a problem.

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

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

Don comes up with a big idea; Roger asks Joan for help with a clerical error; Peggy has a hard time with casting for a commercial.

Don receives a reward for his work; Joan butts heads with a coworker on an account; Roger dodges a big decision.