A drive-by shooting outside the Old Bailey leaves one police officer dead and another wounded in what appears to be a targeted attack on a witness in an attempted murder trial. However, Ronnie and the team are surprised to learn the gunman was specifically targeting police officers, believing his family victims of a police cover-up. The defense team argues their client has been subjected to racism by the police. Can Jake and Alesha convince the jury that the defendant ought to be tried as a murderer and not a victim?

A bungled robbery leads to an innocent hero being shot dead and a hostage with a potentially life threatening medical condition being seized by two armed gunmen. It's up to Ronnie and Sam to beat the clock and find the hostage in just ten hours.

When a petty criminal makes a deathbed confession to the murder of a teenage girl, Ronnie is left shaken to the core as he is forced to reopen a case he thought he had put to bed fourteen years ago.

The murder of an elderly janitor in his home is carried out with such precision and planning that the only evidence the killer leaves is designed to lead the detectives around in circles.

A murder investigation is launched when a concerned citizen alerts the police to a shocking video that is spreading like wildfire on the web, in which a teenage girl is attacked and shot.

Over the course of one long day, the team works on three separate cases, including tracking a serial killer, intervening in a family dispute turned murderous, and disproving an accusation of police intimidation. Will all of the team make it through with their careers intact?

The frenzied stabbing of a police forensic lab technician unsettles the team in a way they never expected when Detective Sam Casey falls for the killer's next intended victim.

A suicidal man kills several people when he causes a catastrophic train crash, and Sam struggles to cope after one of the young victims dies in his arms.

When a person is found dead in the cells, Sam becomes the main suspect, leaving Ronnie and Wes facing a race against time for them to get their hands on the real culprit.

A man is found dead in a hotel room owing his ex-wife thousands of pounds in child support. The child's grandfather is the only suspect, but is the case that easily solved?

When the body of a woman is pulled from the Thames after her car is found in suspicious circumstances, the victim's abusive ex-husband seems to be the prime suspect.

Following the suspect death of an old woman, Ronnie and Sam are lead to believe that the old woman's carer was to blame.

A gay father is found beaten to death and the son that he adopted with his partner is missing. In a race against time, Ronnie and Sam go on the hunt for the missing boy.