The team literally finds themselves in the dark when the investigation into the death of a lieutenant is connected to a city-wide blackout.

Joan and Peggy deal with high-jinx in the office.

Peggy is forced to face some unpleasant facts about a client’s discriminatory business practices. Don and Faye’s burgeoning relationship is tested when Sally runs away from home and turns up…

An unannounced visitor at the Francis home rattles Betty.

Sterling Cooper Draper Price employees resort to scuttlebutt after an agency wide meeting is called.

In the midst of a crisis, Don runs into an old friend.

Don and Peggy are faced with life-altering decisions

Don and Pete disregard Roger’s plans in order to land a new client.

Peggy clashes with her new creative partner; Don pitches under unusual circumstances.

The agency’s Christmas party is nearly spoiled by the late arrival of a surprise and not-so-welcome visitor.

An edict from Roger and Lane puts Pete in a personal dilemma.

The Walkers are excited when Tommy comes down for a visit, but his new girlfriend’s enthusiasm for Walker family history rubs the family the wrong way.

The Walkers’ plans to celebrate Valentine’s Day go horribly wrong when Tommy tells Sarah about another secret that Nora has kept buried since they were kids, and Saul’s hopes for…

Though Nora tries her best to keep Brody at bay, she can’t help but feel the long lost connection between them, and Justin reaches out to a homeless vet reluctant…

After an actress is found dead in her apartment, Green and Cassady attempt to prove that her death was not a suicide.

After a college co-ed’s body is found, the detectives look for a campus rapist, but the medical examiner’s report puts them on a different path, one involving prostitution.

The murder of a corrections officer leads detectives to a women’s prison where a guard was linked to an inmate Carmichael put away on drug charges and a confrontation with…