Watch Blue Bloods Season 6 Episode 21 online via TV Fanatic with over 8 options to watch the Blue Bloods S6E21 full episode. Affiliates with free and paid streaming include Amazon, iTunes, Vudu, YouTube Purchase, Google Play, Hulu Plus, CBS All Access, and CBS All Access (Via Amazon Prime).

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Episode Details

On Blue Bloods Season 6 Episode 21, Erin goes to extremes to track down a fearful witness while Frank decides whether to cancel the Police Union's annual party.

Rating: 4.4 / 5.0 (28 Votes)
Blue Bloods
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Blue Bloods Season 6 Episode 21 Quotes

I know it's a hard choice. The right ones usually are.


Sometimes my job is like a game of chess and I need to be five moves ahead.