Det. Insp. Sam Harvey plans to quit the force for a career as a children's writer, but his plans are put on hiatus when his parents are killed in a bizarre accident.

Harvey and his colleagues are shocked when a film of his parents prior to their fatal accident emerges.

Harvey connects people to his parents' deaths when he discovers phone numbers. Harvey learns Voss' identity.

When he hears his father's will, Harvey realises that perhaps he didn't know his parents as well as he thought.

Harvey learns more about who's after him and why. A strange telephone call tells him not to answer the door.

Harvey sets several traps in order to catch the killer.

Convinced to stay on, Harvey heads to Market Cross to investigate the murder of Rita Black.

Harvey gets his hands on the gloves that murdered Rita, and sets about setting a trap.

Harvey has his work cut out, as his number one suspect buys themself an alibi.

Douglas gets in deeper as he discovers a body, and attends a dangerous meeting with Isobel.

The net seems to be closing in on the killer, and a primary suspect comes close to death.

Harvey sets a trap to snare the killer, and makes a decision about his future on the force.