Did Frank manage to uncover the truth about police brutality?
On Blue Bloods Season 10 Episode 13, an undercover officer accused a cop of it, and set out to get revenge.
Meanwhile, Danny and Baez investigated the murder of a famous photographer who was accused of assault by former employees.
What was the truth?
Elsewhere, Erin struggled to protect a witness as new justice reform laws went into effect.
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Paul Dailly is the Associate Editor for TV Fanatic. Follow him on Twitter.