Jamie and Eddie experience marital tension when Eddie allows her newly released ex-convict father, Armin, to live with them. Also, Danny and Baez go out of their way to help a desperate out-of-town man find his missing sister; Anthony enlists Erin's help when new evidence arises in a closed case from his previous police career; and Frank goes head to head with Archbishop Kearns when a local priest calling for the NYPD to be de-funded causes friction between the force and the church.