Suspects(2014–2016)

Alone

A two-year-old girl is abducted from her home and her dysfunctional family comes under immediate suspicion, but then a convicted child killer is also connected to the case.

Calling Card

Jack and Charlie investigate an assault on the owner of the Green Pit nightclub in east London and discover the victim's sister unconscious in the cellar, with blood pouring from a head wound. The detectives' efforts to piece together what happened are hampered by the lack of CCTV footage, and the case takes a confusing turn when a 19-year-old student is found dead with a flyer for the club in his pocket.

Hard Target

Jack and Charlie's hunt for a serial rapist becomes complicated when the latest woman to be attacked turns out to be Diane Ackerman - the wife of the station's chief superintendent Howard. A routine background check reveals that the police had recently been called to their address and Diane has a bruise on her throat that predates the rape.

Sensitivity

Euthanasia campaigner Terence Holland is found unconscious in his penthouse flat by his doctor after an apparent drugs overdose, leading to the assumption that the terminally ill man had found someone to help him die. However, evidence at the scene prompts Martha to speculate that this could be a case of attempted murder.

The Artist

The London detectives investigate a brutal attack on a popular art teacher at her college.

Victim

The team investigates the case of a badly burned young woman who has been dumped in the Thames.

Safe from Harm

In the team's investigation of a petrol-bomb attack, Jack sets his sights on a reprobate property developer who has so far managed to elude conviction.

Nobody Else (Part One)

In the first of a two-part story, DI Martha Bellamy's neighbour, barrister Jonathan Moxton, is discovered at his home with serious head injuries, his wrists bound with a belt and a pair of knickers stuffed in his mouth. DS Jack Weston guesses he was involved in a sex game that went badly wrong and suspicion falls on Saul Hammond, the man who found him.

Nobody Else (Part Two)

The body of a student, Michael Collins is found on Crowford common. The killer is suspected to be the person who attacked Moxton.

Vigilante (Part One)

Jack leads an investigation into the dark world of child sex offenders. He becomes too emotionally involved within the case after a brutal attack is made on an amateur paedophile hunter Scott Freeman.

The Enemy Within (Part 1)

New colleagues join the team when DI Bellamy is shot dead.

The Enemy Within (Part 2)

AWOL

The team investigate a missing persons case when a soldier suffering from PTSD fails to turn up to his mother's funeral.

Revenge

The team reopen an old case of a fatal stabbing, after a criminal involved in the original attack is left for dead in a copycat crime.