Did Erin lash out at her new boss?
The heat was turned up on Blue Bloods Season 11 Episode 8, when her new boss shadowed her at work.
But Erin was also trying to tackle one of the toughest cases of her career, and it pushed her to the limit.
Elsewhere, Frank told the family they needed to assess their future in the force after recent events.
What did it mean for everyone?
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Paul Dailly is the Associate Editor for TV Fanatic. Follow him on Twitter.