Books 1-6 in the Ryan Kaine series:

When an apparently routine operation goes horribly awry, veteran Marine, Ryan Kaine, is targeted and forced to go on the run. In this action-packed box set, he’ll set out on missions that will test his limits — and put his life on the line…

On the Run
A passenger plane explodes. Eighty-three people die. One man is responsible.

On the Rocks
A schoolboy lies alone and dying on a Scottish mountainside. A highly experienced rescue team can’t find him. One man is the boy’s only hope.

On the Defensive
A hard-working family is threatened. Two vicious killers and their ruthless boss are to blame. One man stands between them.

On the Attack
An innocent woman is viciously attacked. An underworld kingpin and his brutal thugs close in. One man can deliver justice to them all.

On the Money
A member of The 83 dies in an apparent accident. The faceless leader of a drug gang rules his neighbourhood. One man will find the truth.

On the Edge
A medical training course in Denmark. The perfect chance to prove herself. One woman is on a mission to do just that.

From the pen of Kerry J Donovan, the Ryan Kaine series is heart-stopping, action-packed, and full of justice being meted out to the people who deserve it most. Fans of military action will love this series.

Ryan Kaine is an explosive addition to the great military action heroes in the tradition of Lee Child, Vince Flynn, and Matt Rogers.

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For Ryan Kaine, justice isn’t a word. It’s a vow.

Binge-read the first six pulse-pounding Ryan Kaine thrillers in one adrenaline-fuelled box set.

In a world of blood, betrayal, and relentless pursuit, former Royal Marine Ryan Kaine protects those who can’t protect themselves. Across six high-stakes thrillers, Kaine confronts criminal syndicates, corrupt power, and the haunting weight of his own past whilst fighting to defend The 83, a secret network he is sworn to protect.

The Books

Book 1: Ryan Kaine is on the run…

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After an aircraft explosion kills eighty-three civilians, Kaine is branded a terrorist and hunted across the country. Desperate to uncover the truth, he turns to unlikely allies while battling injuries, guilt, and a deadly organisation intent on silencing him permanently. To survive and clear his name, he must ensure he is the last man standing.

Book 2: Ryan Kaine is on the rocks…

Haunted by the lives lost on Flight BE1555, Kaine rushes to rescue a schoolboy lost on a Scottish mountainside. Injured and with a bounty on his head, Kaine must win the trust of a doubtful rescue team, evade the law, and beat the brutal terrain before time—and his past—catches up with him.

Book 3: Ryan Kaine is on the defensive…

A cryptic message draws Kaine to a Greek family under attack in London. With police turning a blind eye and enforcers closing in, he dives into a labyrinth of corruption and surveillance that threatens to expose him at every turn. Kaine must strike fast, uncover the truth, and escape the city unseen.

Book 4: Ryan Kaine is on the attack…

A desperate plea for help draws Kaine into a stalker case that spirals into a deadly showdown with an underworld kingpin. After tragedy strikes, the mission becomes personal, pushing Kaine and his team into a brutal battle to protect a mother and daughter from a criminal empire that wants them silenced forever.

Book 5: Ryan Kaine is on the money…

When a member of The 83 dies under suspicious circumstances, Kaine and Lara go undercover in a neighbourhood ruled by a shadowy drug boss. But when Kaine's partner Lara becomes a target, he abandons subtlety for decisive force. With covert tech, an uneasy ally, and his lethal skill set, Kaine moves to unmask the elusive “Top Man”.

Book 6: Ryan Kaine is on the edge…

A training visit to Denmark turns deadly when Lara is targeted by a hostile student, while back in Norwich, Kaine's associate Danny wages war against a vicious loan shark. As danger escalates on both fronts, Kaine and his team must trust each other completely to survive the converging threats and make it home alive.

Inside This Box Set You’ll Find:

  • Six explosive thrillers following Ryan Kaine’s transformation from hunted fugitive to unstoppable protector.
  • An evolving team of unforgettable characters bound by trauma, honour, and the mission of The 83.
  • Conspiracies, covert ops, found-family dynamics, revenge arcs, and relentless man-on-the-run tension.
  • Rapid-fire pacing and cinematic action across the UK and Europe, steeped in tactical authenticity and emotional depth.

Clear your schedule, brace yourself, and join Ryan Kaine for six missions you won’t forget.

With over half a million copies sold, the Ryan Kaine series has become a must-read for fans of Lee Child, Jack Lively, and Robert Ludlum.
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Here’s what Amazon readers are saying about Kerry J Donovan’s Ryan Kaine series:

★★★★★ These Kaine novels never disappoint.
★★★★★ Once started, this series is impossible to put down.
★★★★★ Fast paced, gripping, and packed with action from start to finish.
★★★★★ Ryan Kaine has become one of my most loved characters.
★★★★★ If you enjoy Jack Reacher, you’ll love Ryan Kaine.

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