A down-on-his-luck ad executive becomes the prime suspect when his wife and son are killed, and his daughter wounded on a night that he claims was spent drinking.

The suspicious death of a Russian model leads the detectives to suspect medical malpractice.

Logan gets a new partner and Stone faces an old friend from law school as they investigate a woman’s claim of self-defense in the shooting death of a small time…

Briscoe and Logan bet that the killing of a star athlete’s father is linked to gambling debts and threats to the baseball player’s family.

Suspects in a psychiatrist’s murder include the victim’s ex-husband, a patient suffering from multiple-personality disorder and her obstructive father.

An NYPD officer kills a troubled fellow officer who took hostages at gunpoint; detectives Lupo and Bernard find valuable stolen documents and a dead body at the man’s apartment.