In the television series , the episode titled " Foreign Interference " is technically Season 7, Episode 21 . While some listings occasionally misorder late-season episodes, Episode 19 of Season 7 is actually titled "Love Lost" . Episode Summary: "Foreign Interference" (S7E21)

: The detectives team up with two Russian operatives to track down a dangerous Russian national who entered the United States on a diplomatic visa.

: The Police Commissioner handles a sensitive case involving Archbishop Kevin Kearns.

: The duo scrambles to investigate who tampered with evidence in one of their legal cases. Cast and Production Director : John Behring. Writer : Peter Blauner. Notable Guest Stars : Tamara Tunie as Monica Graham. Lev Gorn as Detective Arkady Levin. Mark Linn-Baker as Carlton Miller. Where to Watch