A case turns personal for Danny when he works to protect a nurse, Faith Madson, from her violent ex-boyfriend. Also, Shelly Wayne, an acquaintance of Frank's, comes to him with a theory regarding the death of an inmate, and Jamie and Eddie help deliver a baby.

As Danny and Baez join a narcotics task force to track down a drug supplier, Baez comes into contact with drugs and is soon fighting for her life from an accidental overdose. Also, Jamie and Eddie work to protect a rehabilitated sex offender whose neighbors are angry he lives in their apartment building, and Frank forms an unlikely alliance with Mayor Dutton.