Christopher loses his cool in a pastry shop; Dr Melfi and her family discuss the portrayal of gangsters as Italians; the FBI pays the Sopranos a visit.
Law firm Lockhart, Gardner and Bond sue a social networking site on behalf of a Chinese dissident, whose anonymous blog about democracy in China landed him in trouble with the government when his identity was uncovered.
Marlo finds a solution to an old problem. A familiar face joins the local school's teaching staff.
A worried Omar calls in a favour, Carcetti seeks advice from an ex-mayor and Prez begins to make headway with his students.
Mannion reopens an old homicide case when a man last seen fleeing from the crime scene is found murdered. The investigation becomes personal for Ella as it transpires that the victim, a jazz musician, is also her long-lost uncle.