Slow Horses

Spoilers are ahead for Slow Horses season 4’s ending.

In theSlow Horsesseason 4 finale, all the pieces of the show’s intricate puzzle finally come together.

Louisa Guy (Rosalind Eleazar) calls upon Roddy Ho (Christopher Chung) to trace River’s phone.

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In short,Frank is prepared to leak MI5’s incriminating, decades-long connection to his hired guns.

After everything, River makes good on his promise to bring David to an elder-care facility.

Patrice escorts his half-brother, River, to an upscale bar where Frank is waiting.

Collage of Frank Harkness (Hugo Weaving), Diana Taverner (Kristin Scott Thomas), and River Cartwright (Jack Lowden) in Slow Horses season 4’s finale

Custom Image by Kate Bove

The estranged father-son duo finally have the chance to speak face-to-face and it doesn’t go very well.

In fact, he’s more preoccupied with catching his train out of town.

If Taverner doesn’t release him, Frank has ensured that MI5’s connection to his assassins will leak.

Jack Lowden as River looking concerned in Slow Horses season 4 episode 2 with a still of the compound behind him

Slow Horses is an adaptation of CWA Gold Dagger Award-winning Mick Herron’s first novel in the “Slow Horses” series, which follows a team of British intelligence agents who serve in a dumping ground department of MI5 – Slough House. Gary Oldman stars as Jackson Lamb, the brilliant but irascible leader of the spies who end up in Slough House due to their career-ending mistakes.

During the chaos, Frank tosses a live grenade into River’s hood and flees the scene.

Louisa manages to toss the explosive into the nearby river, ensuring that no one is hurt.

At the train station, River manages to track down his father by leaning into his counter-intelligence instincts.

A composite image of River looking on in shock in front of Dander and Roddy using a computer in Slow Horses

Frank hands over his weapon and lets Flyte take him into the Park.

If Taverner doesn’t release him, Frank has ensured that MI5’s connection to his assassins will leak.

Essentially, David enabled Frank’s “deniable assassination squad” for guarantee River and Isobel’s safety.

Gary Oldman as Jackson Lamb eating ice cream in the season 3 finale of Slow Horses

To make matters worse, Frank preys on River’s vulnerabilities.

Frank praises River’s counter-intelligence abilities, saying that he works well under pressure.

Even so, River shows no signs of wanting to join Frank’s insidious ranks.

Slow Horses

Who Dies In The Shootout At Slough House?

Unfortunately, Patrice took Chapman’s phone after brutally murdering David’s former bagman.

Armed with the knowledge of David’s whereabouts,Patrice launches a one-man assault on Slough House.

To make matters worse, Marcus sold his MI5-issued weapon so you can pay off some lingering gambling debts.

Just before Patrice bursts into the building, Marcus manages to retrieve his gun.

Meanwhile, Moira struggles to load a revolver for Shirley Dander (Aimee-Ffion Edwards).

In true Slough House fashion, it’s an absolute mess.

Sadly,Marcus dies defending his team from Patrice, who’s eventually taken down by Lamb and Shirley.

All episodes ofSlow Horsesseason 4 are streaming on Apple TV+.

Somehow, everyone else makes it through the episode relatively unscathed.

Instead of avoiding David’s worsening dementia, River checks his grandfather into a community living facility.

When it became clear that Claude Whelan was the culprit, Moria and Roddy did some additional digging.

A running theme is thatMI5 has messed up as many times as Slough House’s agents.