Det. Flynn returns after her self-imposed six-month exile and takes on a sensitive, high-profile homicide case.

The detectives' investigation into the murder of a high-end call girl is complicated by the revelation of her shocking double life, while Angie tries to adjust to Lucas being the primary investigator and becomes distracted when surprising details of the Montgomery case come to light.

The investigation of two seemingly unrelated murders is hampered by Vega’s need to pass his weapons recertification.

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

All clues in the murder of an armed robber lead the team to a sweet florist.

The team must balance law and justice in the murder of a street artist.

The team investigates a pilot who may be using his career for murder; Angie copes with Vega.

The assistant to a successful but sleazy photographer is murdered; and later, all the detectives are questioned by an internal-affairs sergeant looking into Angie's connection with Neville Montgomery.

The team discovers two bodies at a surgical clinic; Angie is afraid someone's following her.

The team searches for a common denominator in three homicides.

A prime suspect in a murder case may be a victim of foul play herself.

Angie tries to take down a criminal who is determined to end her career.