Fico Di Capo (S03E19)

A young witness to a mafia-related crime is killed at his grandmother's birthday party. Danny Lucci (Jason Jurman) had been guarded by cops under the supervision of A.D.A. Geraldo Perez (Fernando Lopez). Perez and his team are devastated, and try to pin the murder on the Damiano family. Meanwhile, Perez's wife, Nina (Zhana Kushir) is about to be "discovered." She's an undercover cop trying to infiltrate the Russian mob. A reporter for the Ledger is about to run a story about her, when Detectives are tipped off and try to intercept her at her decoy apartment. She's been stabbed and is in very bad shape. Perez is again devastated that they've gotten to his wife, and is convinced her cover was blown by a cop. (iTunes)