A bomb is set to go off in Manhattan on this episode. A debate on the merits of profiling results, as previewed in this video.
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Blue Bloods Season 1 Quotes

Frank: Down these mean streets a man must go who is not himself mean. Who is neither tarnished or afraid.
Henry: Raymond Chandler?
Frank: His definition of a hero.

Jamie: Who sings that?
Renzulli: It's the Red Hot Sushi.
Jamie: Let's keep it that way.