Blue Bloods: Season 13, Episode 8

13 - 8: Poetic Justice

Danny crosses paths with Sonny Le, a criminal from a previous case, when he investigates a gang attack with a shocking motive. Also, Frank and Mayor Chase butt heads over an off-duty cop who goes too far making a political statement; Anthony worries Erin's DA campaign could be threatened by her ex-husband Jack's unsavory business connections; and Jamie investigates a potentially dirty officer whose identity may be close to home.