Logline
Three broke, PTSD-scarred British veterans take a £500,000 mercenary contract to retake a Caribbean island estate from an armed criminal gang — and discover their employer may be as dangerous as the enemy.
Short synopsis
Steve, Simon, and George are skint ex-soldiers haunted by service in Northern Ireland when a clandestine pub meeting drops a lifeline: half a million pounds to evict a heavily armed gang occupying a wealthy landowner's private Caribbean island. They accept, fly to the sun-soaked island of St Bethanie, and methodically build their operation from scratch — recruiting a black-market taxi driver, a boat-owning fellow vet, and a weapons-supplier running a coffee shop — while assembling improvised explosives from household hardware. The mission hasn't started, and the body count is already possible. These men are broke, damaged, and extremely good at this.
Extended synopsis
Steve is sleeping in a caravan in Britain, broke and ground down by PTSD rooted in a near-execution in Northern Ireland. A chance pub reunion with two former comrades — Simon, a laconic ex-tank commander, and George, a parade-ground proud ex-Grenadier Guardsman — turns into a job interview neither of them sought. A Cavalry contact named Henry needs three professionals willing to operate outside the law. His private Caribbean island estate has been seized by an armed criminal gang with corrupt local police protection. He needs them gone before a company anniversary celebration in three weeks. The fee is £500,000, half paid before boots hit sand.
The team's due diligence is itself a thriller beat. At the clandestine London pub meeting, they clock and identify Henry's surveillance plant in the room — a small, electric character moment that establishes these men as operationally lethal even in peacetime. Steve flies ahead to the island of St Bethanie to run advance reconnaissance: mapping escape routes, compromising the hotel's exterior lighting, sourcing equipment through a black-market taxi driver named Edward, and recruiting Derek, a fellow ex-Royal Green Jackets veteran who agrees to run a boat without asking questions. When Simon and George arrive and the team spots another of Henry's watchers at the airport, they abduct, interrogate, and cage him in a harbour shed — improvised booby-trap on the door — before Henry even knows they landed.
The logistics are the spectacle. George acquires dog poison and industrial-strength sedatives. Steve builds claymore-equivalent devices from gas canisters, tilt-switch traps from ballpoint pens, and trip-wire alarms from hardware-store components. Three observation posts are mapped on St Halb's north coast. Three independent extraction routes are established: a seaplane, Derek's boat, and a hidden powerboat in a creek. A coffee-shop owner in Jal named Katie supplies weapons and detonators. The team operates with the quiet, methodical competence of people who have done worse in worse conditions — and that competence is both their greatest asset and the story's darkest undertow.
The mission itself — crossing to St Halb, running the observation posts, executing the assault, evicting the gang, and pulling a specific brown envelope from Henry's safe — completes an arc that raises the question the setup plants early: why does Henry need a mystery envelope retrieved from his own estate, and what does it mean that he spent money vetting and surveilling the very men he hired? The team's extraction under fire closes the action, but the envelope is the payload the series is really delivering.
Why it adapts
The book's greatest cinematic asset is its procedural specificity. The improvised IED construction — claymores from gas canisters, trip-wire alarms from ballpoint pens — is not a montage, it is a setpiece. It puts audience inside the logic of men who are dangerous precisely because they are resourceful and underfunded. That is a poster and a trailer. The Caribbean island setting delivers natural visual contrast: sun-bleached luxury corrupted by armed occupation, beautiful escape routes through jungle and creek, the eerie calm of a resort island about to become a combat zone.
The ensemble is castable and distinctive. Steve is the haunted tactician — a lead with a specific wound (the misfired pistol in Northern Ireland) that grounds every risk calculation he makes. Simon is the armoured-corps pragmatist. George is ceremony and pride wrapped around a man who kills professionally. Three British character actors in these roles, in this setting, with this material, is a commercial proposition. The surveillance-and-counter-surveillance thread — spotting Henry's plant in the pub, identifying and caging his airport watcher — gives directors early, contained, low-budget scenes that establish stakes before a single weapon is fired.
The unanswered question in the source material is the production's real hook: Henry's brown envelope, locked in his own safe on an island his own men didn't secure, accessible only through hired guns he surveilled before trusting. That is not an eviction story. That is a story about what a wealthy man needs disappeared, and what happens when the men he hired to disappear it start asking why.
Format recommendation
Limited Series
The story has a clean three-act spine — recruitment, reconnaissance, assault — but the reconnaissance and preparation phase alone is rich enough to sustain two or three episodes of mounting tension without firing a single shot. A feature would gut the procedural detail that makes the premise distinctive; a 4-6 episode limited series lets each phase breathe, rewards the ensemble dynamic, and delivers a single satisfying payoff, the model that has worked commercially for this genre on streaming platforms.
Comp titles
SAS: Rogue Heroes (BBC/Peacock, 2022)
British military veterans operating outside conventional command structures, strong ensemble of damaged men who are brilliant at violence, period procedural detail treated as spectacle. Direct audience overlap.
The Gentlemen (Netflix series, 2024)
British working-class tough guys navigating criminal enterprise in exotic surroundings, laced with dark humour and competence porn. Shares the tone of men who find clarity only when the situation is dangerous.
Triple Frontier (Netflix, 2019)
Closest structural comp — a small team of veterans taking a mercenary job for financial desperation, executed with tactical realism, complicated by what their employer hasn't told them.
Slow Horses (Apple TV+, ongoing)
British intelligence and security world rendered with procedural specificity and morally compromised protagonists. Audience that rewards tradecraft detail and distrusts authority — exactly the readership this material targets.
Sugar (Apple TV+, 2024)
A genre story that leans into the mechanics of surveillance and counter-surveillance as cinematic foreplay before the violence arrives. Shares the patient, observational build this book does well.
Audience
Primary: men 35-60 who watch SAS: Rogue Heroes, Reacher, and The Gentlemen — an audience that responds to tactical competence, veteran authenticity, and morally grey operators. Secondary: crime-thriller viewers drawn to the Caribbean setting and the heist-adjacent preparation structure, comparable to the audience that made Triple Frontier and Operation Fortune viable. Streaming-native but skews toward ITVX, BBC iPlayer, Peacock, and Amazon depending on territory deal. The PTSD thread and veteran authenticity give the project editorial credibility and press hooks beyond pure genre.
Tone
gritty
procedural
morally-grey
propulsive
darkly-comic
sun-scorched
