he fourth season of the HBO drama series The Sopranos began airing on September 15, 2002 and concluded on December 8, 2002, consisting of thirteen episodes.

The story of season four focuses on the marriage between Tony and Carmela, as Tony engages in an affair with his uncle's nurse Svetlana and Carmela finds herself infatuated with one of Tony's soldiers, Furio Giunta. The increasing tension between Tony and Ralph Cifaretto comes to a violent head and Uncle Junior is put on trial for his crimes.

Overview from themoviedb.org