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On the Defensive

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A cryptic plea. A family under siege. One man against the odds. Ryan Kaine receives a mysterious text with an address and a terse message: “Help them”. With a ruthless gang threatening a family he...
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  • 09 September 2025
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Ryan Kaine is on the defensive…

When Kaine receives a mysterious text with an address and the terse message, “Help them,” he knows someone from The 83 is in trouble.

Unscrupulous men try to force Greek restaurateurs, the Constantines, out of their business and their home, but they stand firm. Until the head of the family, Orestes, is attacked and left fighting for his life. Their neighbours are running scared. The police are turning a blind eye.

With one of The 83 in danger, Kaine flies straight into the heart of trouble without a second thought. Trying to avoid the attention of the thousands of facial recognition cameras across London, he finds himself waist-deep in a mesh of treachery, lies, and deception, caught in a fight to the death that he cannot and will not lose.

Can Kaine find out why the family is under attack, neutralise the threat, and make it out of London without being recognised?

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.

Here’s what Amazon readers are saying about Kerry J Donovan’s Ryan Kaine series:

★ ★ ★ ★ ★ The strength of the author is that Kaine's character and his actions are believable.
★ ★ ★ ★ ★ Follow the thrills, lies, and deceit as Kerry weaves an intricate plot leaving readers wanting to turn the page and not miss anything.
★ ★ ★ ★ ★ Great story. Lots of action.
★ ★ ★ ★ ★ Another non-stop ride!! Ryan Kaine is back to adjusting bad guys life expectancies!
★ ★ ★ ★ ★ Never a dull moment and I’m greatly looking forward to the next chapter in the Ryan Kaine saga!

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Price: $18.99
Pages: 384
Publisher: Vinci Books Ltd
Imprint: Vinci Books Ltd
Series: Ryan Kaine
Publication Date: 09 September 2025
Trim Size: 7.80 X 5.10 in
ISBN: 9781036701659
Format: Paperback
BISACs: FICTION / Thrillers / Military, Thriller / suspense fiction, FICTION / War & Military, FICTION / Action & Adventure, FICTION / Thrillers / Espionage, War, combat and military adventure fiction
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Kerry J Donovan was born in Dublin. A citizen of the world, he now lives with his partner, Margaret, in Newark on Trent, Nottinghamshire. He has three children and four grandchildren. When he's not creating more mayhem for Ryan Kaine and DCI David Jones to clean up, he's riding the countryside on his motorbike, keeping fit by running and swimming, and doing little bits of DIY.