[s6e11] Back In The Day Instant

: 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 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. [S6E11] Back in the Day

: Played by guest star Treat Williams , who becomes a recurring character throughout the series. : Featured in this episode, played by Grainger Hines

: Erin investigates the murder of a detective assigned to the DA’s office, uncovering a pattern of witness intimidation and killings linked to an ongoing case. : Played by guest star Treat Williams ,

: Frank must navigate the fallout of the book while Garrett Moore warns him of the political repercussions.