Season 4 of The Sopranos 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. Tony finds himself dealing with a wife who is constantly on his case and increasingly unhappy with their marriage, the absence of trusted capo Paulie and ascension of nephew Christopher as acting family capo.