Susan and Luke investigate the murder of Alice Fielding, who was found strangled in her flat. As they investigate her friends and acquaintances, they find that her ex-boyfriend is now dating her mother.

Susan and Luke investigate a hit-and-run crime that appears deliberate. Meanwhile, DC Alison Bain and DC Frank Craven investigate the shooting of Ryan Everitt.

Susan investigates the death of a sex offender who was found tied to a tree and shot. Luke investigates the death of a seventeen-year-old who bled to death in the corridors of her school.

Susan and Luke investigate the death of a woman who appears to have jumped off the roof of a building.