8 Exciting Spy Thrillers Like Slow Horses and the Slough House Series

For those who need a refresher on the Slough House series, why not start with the first book in the series, Slow Horses. In this book we meet the demoted MI5 agents who have been sent to while away their time at Slough House.

All of the agents would do anything to get back into action, and when a kidnapping presents the opportunity, they are ready to jump back onto the field. 

MI5 officer Winnie Monks is still haunted by the death of an agent on her team 10 years prior, a murder carried out by a former Russian Army officer turned criminal known as Major.

When Winnie hears that Major will be vacationing in Costa del Sol, she sends in a surveillance team. The MI5 team decides to take up residence at an empty villa nearby. To their surprise, the villa is actually being occupied by a young couple.

The couple’s romantic getaway is about to become a thrilling and terrifying trip into the heart of organized crime. 

Former MI6 agent Emil Torrance has no desire to return to the deadly ways of his time on the force.

When a group of armed men sieges his small hamlet in Barkelow, Emil believes they’ve come to kill him over his past. He could easily use his talents to escape unnoticed, but when he finds out that the men have infiltrated all of Barkelow, Emil knows his son is in danger.

With no trust in the police, Emil takes matters into his own hands, which means he will have to become the man he has been trying to push out of his memory.

But these men are a bigger threat than Emil first thought, and he must first figure out who they are and what they want. 

While working for a private security company in London, former MI6 agent Paul Samson is attacked and almost killed by an assassin. As others close to him are also attacked, Paul flees to Estonia to try to solve the mystery of who is out to get him.

Paul discovers an international conspiracy of a Stasi agent with connections deep inside both the UK and US governments.

Now, it is up to Paul to expose the mastermind while minimizing lives lost and agencies compromised by his infiltration. 

Richard Knox used to be a star agent at MI5, before he got suspended and had his reputation ruined. So, when he is called in to aid in a double murder investigation, Knox is eager to find the traitor responsible and to clear his name.

Helping him is eager CIA recruit Abby Bennett. Meanwhile, a Soviet scientist is about to make a breakthrough that will change dynamics across the world.

The three powers face off as each agent fights to survive and get out on top. 

Rebecca da Silva used to be a top sniper for the British Special Forces in Afghanistan, now she’s just toiling at a dead-end job.

Stephen Holm is an MI5 agent who is ready to risk his position by trying to capture a terrorist that the agency doesn’t believe exists. 

After a terrorist attack in Tunisia, da Silva and Holm are sent on tangled paths to find the man responsible, a journey that takes them into one of the most prominent seats of power… the White House. 

When an aging spy disappears from his own garden, MI6 knows there’s only one man to handle the case: retired agent Peter Marlow. Marlow, who was finding his quiet retirement boring and incomparable to the life he used to live, agrees to help locate the mole responsible.

What he finds is something even larger, a far-reaching conspiracy of which the disappeared agent is either the mastermind or the victim.

Returning to his spy roots, Marlow must dismantle the threat and protect vital British intelligence. 

Kate Henderson is on vacation in the South of France, trying to rebuild her life after leaving MI6. Who should disturb her peace but the UK Prime Minister himself?

He comes with an urgent plea for help: a Russian source has come forward and stated that the KGB has a spy in the very inner circle of MI6 in London.

Against her intuition, Kate embarks on a top-secret and very dangerous investigation. But, due to her past failures, neither her former allies nor her enemies trust her anymore. 

Two seasoned British intelligence veterans, the clever and aging Sir Kenneth Audrey and the tough MI6 agent Patrick Hyde receive a tip that some shady businessmen have been moving terrifying and lethal weapons.

Not to mention that there’s a British spy for the KGB in their midst. In order to prevent innocent deaths, Audrey and Hyde must jump back onto the scene on a mission that takes them into dark corners and minds around the world.