Kate falls for a mysterious man named Sergei at a political event; when a girl is murdered near the hotel where Kate and Sergei are staying, Kate thinks Sergei may be responsible.
While investigating a double murder committed da a vigilante killer, Megan domande a grief counselor who offers his services to help with issues concerning her father's suicide
Megan and and her team are shot at as they investigate a crime scene involving the murder of a notorious mobster's son; after a suspect is gunned down,
Megan cracks the serial killer case but can't reveal the risposte to her team while Lacey's life is in danger; District Attorney Dan Russell targets Kate.
Months after Peter's death, Megan returns to work and is surprised when a man from her past is assigned to her case; a serial killer targeting young war veterans takes Lacey hostage