First Look: A Witness Out Of Protection On Blue Bloods

Bridget Moynahan as Erin Reagan-Boyle

1. Bridget Moynahan as Erin Reagan-Boyle

In Blue Bloods' "With Friends Like These" (Season 6, Episode 4), Erin attempts to convict a slippery mob boss for an old murder. Unfortunately, the case is muddled when her former informant, Vincent (Dan Hedaya), leaves witness protection to provide his old boss with an alibi. Also, Frank finds himself in a departmental war with Commissioner of the New York City Fire Department, Stan Rourke (Dan Lauria).
Bridget Moynahan as Erin Reagan-Boyle

2. Bridget Moynahan as Erin Reagan-Boyle

"With Friends Like These" (Season 6, Episode 4)
Bridget Moynahan as Erin Reagan-Boyle

3. Bridget Moynahan as Erin Reagan-Boyle

"With Friends Like These" (Season 6, Episode 4)
Dan Hedaya as Vincent Rella

4. Dan Hedaya as Vincent Rella

"With Friends Like These" (Season 6, Episode 4)
Tom Selleck as Frank Reagan

5. Tom Selleck as Frank Reagan

"With Friends Like These" (Season 6, Episode 4)
Bridget Moynahan as Erin Reagan-Boyle and Dan Hedaya as Vincent Rella

6. Bridget Moynahan as Erin Reagan-Boyle and Dan Hedaya as Vincent Rella

"With Friends Like These" (Season 6, Episode 4)