Watch Blue Bloods Season 6 Episode 4 online via TV Fanatic with over 9 options to watch the Blue Bloods S6E4 full episode. Affiliates with free and paid streaming include Amazon, iTunes, Vudu, YouTube Purchase, Google Play, Hulu Plus, Amazon Prime, CBS All Access, and CBS All Access (Via Amazon Prime).
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On Blue Bloods Season 6 Episode 4, Erin's former informant leaves witness protection and puts her case in jeopardy while Jamie deals with a mentally ill woman.