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On the Edge
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09 September 2025

Ryan Kaine is on the edge…
Ryan Kaine and Lara Orchard’s trip to Denmark for a combat medic course takes a sinister turn when Lara becomes the target of a vindictive fellow student. Meanwhile, in Norwich, their young associate, Danny Pinkerton faces off against a ruthless loan shark and his thugs to protect an injured friend.
As Kaine and Lara confront escalating threats, Danny orchestrates a daring heist to bring down the loan shark’s operation.
With lives on the line and enemies closing in from all sides, Kaine and his team must rely on their skills, wits, and unwavering loyalty to survive.
Can Kaine, Danny, and Lara trust their instincts, their training, and each other to ensure they all make it home alive?
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:
★★★★★ If you enjoy Lee Child’s books, you will enjoy this.
★★★★★ The action is fast paced as expected.
★★★★★ Kept me reading and on the edge of my seat.
★★★★★ Very energetic and difficult to take a break from reading..
★★★★★ Quick, punchy, and got to the end breathless.
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.