Jay R. Ferguson

Tensions rise when there’s a lack of communication at Sterling Cooper & Partners.

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.

Things quickly become awkward after the two firms merge, Don asserts his dominance over Sylvia, Pete has to deal with his ailing mother, and Bob Benson helps out a sick Joan.

The client list at SCDP changes, causing some big ramifications for the staff, both personally and in business.

Peggy plans for the future. Roger courts a potential client.

The Drapers get quite an offer, SCDP initiate Project K and Harry and Joan have a showdown.

Don clashes with a client. Pete entertains a guest. Peggy struggles to motivate the staff.

Don spearheads a new campaign, Roger gets some unsettling news, and Betty takes in a houseguest.

Opportunity is in the air for everyone and Pete meets a stranger on the train.

While the company revels in the glory of its successful Jaguar pitch, Lane reaches breaking point. Plus, Sally is reunited with an old friend.

While Don and the team prepare their pitch for the agency-defining Jaguar account, Joan receives a lucrative offer. Plus, Peggy makes a big decision.

'Tis the season to be jolly, but there isn't much festive cheer to be found at the agency. Harry attempts to help an old friend, while Don and Joan bond.

Roger puts on his entrepreneur hat; Don asserts himself over his colleagues; Sally gets in over her head.

Peggy becomes angry when she is forced to keep a secret she doesn't want to keep; Pete sticks his neck out for a friend; Don receives surprising news.

Don, Roger and Pete attempt to bring in new business. Sally comes to the aid of a relative.

Peggy deals with relationship trouble and a pitch for Heinz beans. Don and Megan visit potential hotel chain client Howard Johnson's upstate. Jane convinces Roger to experiment with LSD.

Don runs into someone from his past. Joan makes a decision, and Roger gives Peggy extra work.

As Sterling Cooper Draper Pryce tries to build upon its current business, Peggy is given new responsibility. Don and Harry indulge a client.

Lane finds a wallet in a cab and decides how to handle it. The fallout from the party leaves Don and Megan upset. Joan has a hard time dealing with her mother.