Slough House is Jackson Lamb’s kingdom; a dumping ground for members of the intelligence service who’ve screwed up: left a secret file on a train, blown surveillance, or become drunkenly unreliable. They’re the service’s poor relations – the slow horses – and bitterest among them is River Cartwright, whose days are spent transcribing mobile phone conversations.

When an unhappy, aging shaman invokes the Hopi god of death in an effort to bring the world to an end, those around him are sceptical. Then they discover his body, mutilated and bloody, and other similarly disfigured bodies begin to appear. Horses, sheep, cattle - no living thing is safe. But the cause of these horrifying deaths remains unclear.... Enter a young Duran, called back to the reservation to investigate. Duran immediately recognises the significance of the shaman's spell, and, with the help of two scientists, he works to combat the supernatural scourge.

Berlin. 1963. The height of the Cold War and an early morning spy swap. On one side of the trade: Martin Keller, an American physicist who once made headlines, but who then disappeared into the English prison system. Keller's most critical possession: his American passport. Keller's most ardent desire: to see his ex-wife, Sabine, and their young son. But Martin has questions: who asked for him? Who negotiated the deal? Just the KGB bringing home one of its agents? Or, as he hopes, a more personal intervention? 

In 2005, Marin Katich, living in Croatia under an alias, is being watched. Before the year is out, he has been assaulted, arrested, charged with serious war crimes and locked up in Scheveningen Prison in The Hague, waiting for his case to come before the International War Crimes Tribunal for the former Yugoslavia. In Sydney, Anna Rosen, a freelance journalist, is sent photos on her computer of a man she knows to be dead - gunned down in a brutal ambush in Bosnia over a decade ago. A man she'd once loved but who had betrayed her. Is it possible the photos really are of Marin Katich?

A Russian defector is found brutally murdered in a London hotel. Only four people knew he had turned - the four most important and powerful figures in Whitehall. There's only one conclusion - a mole has infiltrated the highest levels of the nation's security. Operating in secret from within Westminster's darkest corners, former spy Solomon Vine must uncover the traitor. Because Britain's future hangs in the balance. And with it the fate of the whole world.

Julian Lawndsley has renounced his high-flying job in the City for a simpler life running a bookshop in a small English seaside town. But only a couple of months into his new career, Julian's evening is disrupted by a visitor. Edward, a Polish émigré living in Silverview, the big house on the edge of town, seems to know a lot about Julian's family and is rather too interested in the inner workings of his modest new enterprise. When a letter turns up at the door of a spy chief in London warning him of a dangerous leak, the investigations lead him to this quiet town by the sea.

On the brink of defeat, Hitler commissioned 10,000 V2s - ballistic rockets that carried a one-ton warhead at three times the speed of sound, which he believed would win the war. Dr Rudi Graf who, along with his friend Werner von Braun, had once dreamt of sending a rocket to the moon, now finds himself in November 1944 in a bleak seaside town in Occupied Holland, launching V2s against London. No one understands the volatile, deadly machine better than Graf, but his disillusionment with the war leads to him being investigated for sabotage. 

In the office at MI5 where he works, they call Jonas Merrick 'the eternal flame'. It isn't a compliment. It's because he never goes out. He never goes undercover, never does surveillance, never goes with the teams that kick down the doors or seize the suspects off the street. He commutes into work and sits at his desk and then he goes home. But Jonas has qualities the hot-shots fail to notice: a steely concentration, a ruthless ability to focus and find the enemy hiding in plain sight.

One fine day, A.D. 70, Sosia Camillina quite literally runs into Marcus Didius Falco on the steps of the Forum. It seems Sosia is on the run from a couple of street toughs, and after a quick and dirty rescue, P.I. Falco wants to know why.

When disgraced spy Solomon Vine's friend and rival Gabriel Wilde vanishes without trace, it's only Vine who might be able to discover what has happened to him. A single missing file holds the key. That, too, is gone. But its contents, Vine is told, are incendiary. There were few Wilde could trust. And being one of them appears to have fatal consequences. But as Vine's off-the-books investigation begins to reveal the shocking truth, he realizes there's much more at stake than one man's life.

On New Year's Eve at the end of one of the hardest years in history, hundreds of revellers shoot their guns into the air in time-honoured LA tradition. But as the rain of lead comes down, a man is shot dead in the middle of a crowded street party. Detective Renée Ballard soon connects the bullet to an unsolved cold case last worked by legendary ex-LAPD detective Harry Bosch. As they investigate where the old and new cases connect, a new crime shatters the night shift.

Nat, a 47-year-old veteran of Britain's Secret Intelligence Service, believes his years as an agent runner are over. He is back in London with his wife, the long-suffering Prue. But with the growing threat from Moscow Centre, the office has one more job for him. Nat is to take over The Haven, a defunct substation of London General with a rag-tag band of spies. The only bright light on the team is young Florence, who has her eye on Russia Department and a Ukrainian oligarch with a finger in the Russia pie.  

A Signature Performance: Kenneth Branagh plays this like a campfire ghost story, told by a haunted, slightly insane Marlow.

Bellingcat, the home-grown investigative unit, is redefining the way we think about news, politics and the digital future. Here, their founder - a high-school dropout on a kitchen laptop - tells the story of how they created a whole new category of information-gathering, galvanising citizen journalists across the globe to expose war crimes and pick apart disinformation, using just their computers. 

A Russian honey trap agent targets a young CIA operative to uncover a mole at the Russian Intelligence service. Dominika Egorov, is sucked into the heart of Putin's Russia, and spat out as the twists and turns of betrayal and counter-betrayal unravel. American Nate Nash handles the double agent, codenamed MARBLE, considered one of CIA's biggest assets. Will Dominika be able to unmask MARBLE, or will the mission see her faith destroyed in the country she has always passionately defended?