Season 04 , Episode 12 – “Rattus Rattus”
In the Season 4 finale, Ray, hoping his deal with Hector will be his family’s salvation, learns that Sonia has turned over incriminating evidence to FBI agent Frank Barnes. Ray is forced to wear a wire, but decides to play the Russian mob off the FBI, but things take a dangerous turn. Meanwhile, Mickey’s attempt to cash in on the big fight leads him to a discovery that could help Ray against both sides.