Danny and Jackie investigate a domestic violence claim against a high-powered councilman.

Jackie is kidnapped by a dangerous criminal seeking revenge on Danny while Jamie gets a new partner.

Danny believes a serial killer is on the loose and Erin's ex-husband resurfaces.

A bride is murdered on her wedding day and Danny and Jackie are reluctantly pulled off the case.

Danny works protection detail for Erin's key witness, an infamous photographer, who is nearly killed in a hit and run.

Frank orders Danny to hunt for a NYPD detective who is being held hostage by a Malaysian drug lord.

Danny investigates a voodoo community after a man dressed as the spirit of death attacks on Halloween.

A drug dealing student is murdered on a college campus.

A possible serial killer terrorizes motorists and an emotional Danny needs to hold it together when his son is severely injured.

Linda overhears some information while on the job that helps Danny and Kate with a lead in their shooting case.

Jamie deals with the emotional consequences of his actions on the job.

Danny is investigated after the police find a bag of cocaine in the trunk of his car.

Danny must find out who's sending a message when a victim covered in rat bites is thrown from a moving car.

Danny investigates within the Hasidic community after a tragedy occurs involving a newly appointed Grand Rebbe.

Danny winds up in anger mangement class when he takes a heated approach to a case.

Erin and Danny investigate the cold case of a girl whose attacker was never convicted.

Danny looks for "Bonnie and Clyde" thieves who robbed a bank and hurt an innocent bystander.

Tragedy strikes for random people in New York and Danny must find out what connects them.

Danny investigates the death of a woman who kept a secret from her family about an interfaith relationship.

Danny and Linda fight when she prevents him from questioning a witness until after surgery and the witness dies during the procedure.

Danny finds a disoriented man in a park covered in his girlfriend's blood and unable to remember how he got there.

Danny is emotional after he fails to keep his promise to protect someone and the reagans suffer a loss due to a housing project gang.

The Reagans rally to take down a gang leader after crimes hit close to home.