J.K. Flynn

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J.K. Flynn

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September 2022


I spent over ten years as a frontline police officer in the UK. It’s a job unlike any other, a job that exposes you to aspects of life and society that most people never get to see. It changes your perspective on the world. My time in law enforcement made me want capture that perspective, to write crime fiction with an authentic voice, raw and unvarnished. Detective Esther Penman is the product of those efforts – I hope you enjoy her stories!

Subscribe to my newsletter at jkflynn.co.uk for news on all promotional discounts on my books!

— J.K. Flynn

Average rating: 4.26 · 1,438 ratings · 91 reviews · 4 distinct worksSimilar authors
The Art Merchant (Detective...

4.25 avg rating — 1,059 ratings2 editions
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Vengeance (Detective Esther...

4.32 avg rating — 256 ratings8 editions
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Bad Copper

4.04 avg rating — 67 ratings3 editions
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Pentacle (Detective Esther ...

4.39 avg rating — 56 ratings5 editions
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* Note: these are all the books on Goodreads for this author. To add more, click here.

Bad Copper out today!

Bad Copper
Bad Copper is out today on Amazon:
https://www.amazon.com/dp/B0FSYG182Z
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Published on October 21, 2025 02:28
The Art Merchant Vengeance Pentacle
(3 books)
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4.27 avg rating — 1,371 ratings

J.K.’s Recent Updates

J.K. Flynn is now friends with Steven
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Tom Lake by Ann Patchett
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Sweeping, poignant and breathtakingly well-written.
Bad Copper by J.K. Flynn
"Bad Copper is a dark, morally charged crime novel that asks a brutally simple question: what would you do if doing nothing paid half a million dollars?

Inspector Rupert Jones is flawed, broke, and exhausted by life — which makes his dilemma feel uncom" Read more of this review »
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Tom Lake by Ann Patchett
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When God Was a Rabbit by Sarah Winman
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Beautifully written - as always!
J.K. Flynn and 5 other people liked Jenny's review of Bad Copper:
Bad Copper by J.K. Flynn
"Bad Copper is about a copper who believes in the ethics of law enforcement. Things change when his marriage breaks down and he finds half a million dollars, which he thought no one would miss. However, for Police Inspector Rupert Jones, that was not " Read more of this review »
J.K. Flynn and 7 other people liked Louise Wilson's review of Bad Copper:
Bad Copper by J.K. Flynn
"What would you do if fate handed you over half a million in cash? Half a million, and all you had to do was not try to save someone's life? That's the choice Police Inspector Rupert Jones faces, a man whose own life has lurched from one disaster to a" Read more of this review »
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Aussie Lovers of...: This topic has been closed to new comments. * Currently Reading/Just Finished 2025 1248 129 Dec 31, 2025 07:56PM  
Jesse Stuart
“Write something to suit yourself and many people will like it; write something to suit everybody and scarcely anyone will care for it.”
Jesse Stuart

Winston S. Churchill
“Men occasionally stumble over the truth, but most of them pick themselves up and hurry off as if nothing had happened.”
Winston S. Churchill

Oscar Wilde
“We are all in the gutter, but some of us are looking at the stars.”
Oscar Wilde, Lady Windermere's Fan

Mark Twain
“A lie can travel half way around the world while the truth is putting on its shoes.”
Mark Twain

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