Vancouver homicide detective Angie Flynn investigates the murder of a popular high-school teacher in the opener of this crime-drama series.

Angie and Vega investigate a possible suicide in the Season 2 premiere. Meanwhile, former undercover detective Mark Cross takes over as the Metro Police Department's new commander, and it turns out he has a connection to Angie's past.

Flynn and Vega investigate a kitchen explosion at a popular diner that resulted in the owner's death. Meanwhile, Flynn decides whether she will testify for Sgt. Cross; and she tells Vega the truth about their past.

A case from Cross and Flynn's past reemerges and causes distress for both of them, making Flynn realize they have to be honest about their history.

A father is murdered and his daughter is kidnapped; Angie continues on the Neville Montgomery file.