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

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

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