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Season 1 - Sep. 22, 2011
Season 2 - Sep. 27, 2012
Season 3 - Sep. 24, 2013
Season 4 - Sep. 23, 2014
Season 5 - May. 03, 2016
Person of Interest Season 3 Episode 17
HD
Overview:
The Machine assigns Root to seek out a janitor with a mysterious past, but when her very presence puts his life in danger, Finch also receives his number.