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Looking to watch Blue Bloods Season 4 Episode 20 online? TV Fanatic is your destination for every paid and free streaming option of the Blue Bloods S4E20 full episode from 1 affiliates.

Rating: 4.6 / 5.0 (13 Votes)

Episode Details

Blue Bloods Season 4 Episode 20: "Custody Battle"

Frank is unhappy when Erin is assigned the case of a cop accused of killing a suspect in his custody on Blue Bloods.