In this episode, Frank Reagan's leadership is tested when his former partner, Lenny Ross, decides to publish a tell-all book about their early years on the force. The book threatens to expose potentially damaging details about Frank's past, leading to a conflict between Frank's loyalty to an old friend and the need to protect the NYPD's reputation.
: Played by guest star Treat Williams , who becomes a recurring character throughout the series. [S6E11] Back in the Day
: Featured in this episode, played by Grainger Hines. Back in the Day | Blue Bloods Wiki | Fandom In this episode, Frank Reagan's leadership is tested
The query refers to which is the 11th episode of the sixth season of the police procedural drama Blue Bloods . Plot Overview In this episode