CBS Unveils ‘Blue Bloods’ Season 4 Premiere Photos

Blue Bloods Season 4 Premiere (6)

Blue Bloods is preparing for a somber season four premiere that will see the Reagan family divided after the death of a police officer. In the episode, “Unwritten Rules,” Erin and Frank will find themselves at cross-purposes when she drops the charges against the suspected murderer and releases him from custody. Check out the gallery below to see pictures of Frank visiting the graveside of his fallen co-worker.

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Blue Bloods season four premieres Friday, Sept. 27th at 10:00-11:00 PM, ET/PT on CBS.

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