Danny and Baez investigate the reappearance of a runaway, who isn't quite who she seems. Frank battles with the mayor about a community parade that is honoring a once convicted cop bomber. Jamie and Eddy stumble upon a misleading congressman.
A detective in a mob case is killed. Garrett is accosted outside his home by a SWAT team after a false report. Erin is approached by an acquaintance of Anthony who offers to help in an organized crime case over Anthony's objections.
When a famous basketball player is found dead in his apartment of an apparent drug overdose, Danny looks into ties to old friends in a local gang. Erin is forced to re-examine the case of a man she convicted years ago who may be innocent.
Cases this week involve (Danny) a widowed nurse that is the victim of domestic violence, (Frank) a woman that alleges corruption at the jail, and (Jamie/Janko) an illegal alien that gives birth and lives in a condemned home.
Danny and Baez join a narcotics task force to track a drug supplier; Baez comes into contact with drugs and gets an accidental overdose; Jamie and Eddie work to protect a rehabilitated sex offender; Frank forms an unlikely alliance with Mayor Dutton.
Jamie and Eddie ask Erin to drop the charges against a man who bravely rescued a woman from a local hostage situation; Danny and Baez work a case involving car thieves and discover the leader is a mobster they've dealt with before.