Old wounds are painfully reopened for the shocked residents of Ravenswick, as Detective Inspector Jimmy Perez and his team look to a past crime to solve the present day murder of a young teenage girl.

Detective Inspector Jimmy Perez believes he and his team are finally closing in on the killer as they discover what 17-year-old Catherine Ross was hiding from everyone in the hours before her death.

When an old acquaintance of Detective Inspector Jimmy Perez dies in a suspicious car accident on the island, he wonders whether his journalist friend had uncovered a story that cost him his life.

After a second body is found brutally murdered on Shetland, Detective Inspector Jimmy Perez wonders if the two killings are connected to corporate greed and corruption on the island or to just one woman - Evie Watt.

Time is running out for Detective Inspector Perez as prime suspect Peter Latimer lies critically ill in hospital. Was the fire a drunken accident, or was Peter Latimer the second victim of a murderer still free on Fair Isle?

When a young man disappears on the Aberdeen to Shetland ferry crossing and a small boy ends up in intensive care, DI Jimmy Perez and his team investigate, becoming convinced the two events are connected.

DI Jimmy Perez is convinced that Michael Maguire is somehow implicated in the death of Robbie Morton. But with the investigation seemingly under threat before it's even started, he faces an uphill battle to uncover the truth behind Maguire's silence.

The murder investigation takes Perez and Tosh to Glasgow as they try to uncover the reasons behind Maguire's brutal death and his connection to Robbie Morton. But old ghosts return to haunt Perez as his enemies try to prevent him from getting to the truth.

When Thomas Malone has his murder conviction overturned after 23 years behind bars, DI Perez has to reopen the investigation into the 1994 death of local teenager Lizzie Kilmuir.

Perez is on the trail of an attacker, Tosh investigates an oil company in the hunt for Sally's killer, and DNA testing in the Kilmuir case yields a surprising result.

A severed hand washes up on a Shetland beach, with further body parts discovered in a holdall that has been dumped at sea. Perez and the team begin a complex murder investigation.

A horrifying discovery at the Hayes house changes the course of the investigation. Perez establishes the probable cause for Daniel's murder and his sister Zezi's disappearance.

Sandy feels the heat in the aftermath of Calum’s suicide. Convinced that McGuire is the key to cracking the case, Perez travels to Glasgow in an attempt to track him down.

Perez closes in on Zezi's location at last. But can he reach her before it's too late?

When a prominent and controversial Shetlander is shot dead on their doorstep in broad daylight, Perez rushes back from his mother’s funeral to lead the investigation.

In the aftermath of the diving incident, the team searches for a link between the two bodies. Meanwhile, Perez must deal with the return of Donna Killick.

After the shocking events of the previous night, Perez must piece together what happened before a rampaging and vengeful Creggan finds his target.

As Perez closes in on the identity of Galbraith’s killer, he struggles with Duncan’s secret, while Donna has one more surprise in store.

After the discovery of an unknown body, the search for Connor grows increasingly desperate. Perez follows Danny on a perilous journey into his murky past.

Mounting evidence pushes Perez and the team to revise their view of Connor Cairns. Is he a vulnerable missing person or a killer on the run?

Perez issues a warrant for Connor’s arrest and looks for the motive behind his bomb-making. Sandy tries to find out what business William Rodgers had in Shetland.

Perez tries to get the measure of Lloyd. Evidence emerges of another bombmaker. The net closes in around Martin. Sandy uncovers Connor’s interest in a piece of local history.

A Met detective returns to Shetland on the trail of a vulnerable witness. DI Ruth Calder must team up with Tosh to find the girl before it’s too late.

Calder and Tosh must work together to find the armed killers and prevent further disaster. Howell and Nowak take refuge with a local and wait for a means of escape.

Unnerved by her discovery, Calder decides to stay on in Shetland. Tosh welcomes the support, as the revelation of a tattoo sends the case in a sinister new direction.

Tosh believes she has the murderer in custody and tasks the team with finding the evidence to charge. Calder suffers in silence with Jean’s revelation.

Calder initially reels from the awful news, but quickly becomes suspicious. Tosh worries Harry and Donnie with her pursuit of a controversial new theory.

The hunt is on for Ian Bett as a picture of Anton Bergen begins to emerge. Are Calder and Tosh dealing with the revenge of a jealous ex-husband?