Scientists arrive in Jarden to question Nora and the families of the missing girls. Matt finds a new congregation in the encampment outside of town.
After a close call with a sinkhole, Boyd becomes to afraid to leave the house.
Don makes a new friend. Joan meets a client for drinks. Peggy hears impressive new work. Roger has a puzzling phone call.
As Alan gets increasingly comfortable living in the beach house. Walden wants to invest in his girlfriend Kate's fashion career, without her discovering that he is billionnaire Walden Schmidt rather than broke Sam Wilson, as he has led her to believe. The stress of this deception begins to affect Walden's health.moreless
Walden is struggling to keep his two identities straight and Alan is home alone on Christmas.
With Charlie by his side, Frank returns to his old company to help with a merger.
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.
A respected man in the neighborhood has a big secret and is murdered before he can tell it.
Following Charlie's funeral, Alan meets Internet entrepreneur Walden Schmidt.