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I grew up in the small market town of Newtown in Mid-Wales, thirty miles from the English border. From a very early age, I was an avid reader of anything I could lay my hands on and later wrote poetry and short stories for my school magazine.
I studied for a degree in Biochemistry at UCW Aberystwyth on the Welsh coast. I followed this with a PhD, at the University of Bath, and spent ten years carrying out post-doctoral research at the Metabolic Research Lab in Oxford (Nuffield Dept Clinical Medicine). Meanwhile, I gigged on the Oxford music scene with my band called 'IRIS' and joined the Police Specials, going out on an eight-hour shift every Friday night, as part of a response unit. It was after a particularly harrowing shift that the ideas for my first novel, Death Master, first formed.
In 2003, I moved back to Wales. 
'Death Master' was my first crime thriller novel. I have since published 22 more books in the DI Giles series, and 3 books in the DI McKenzie Series.

I have been a full-time author since the summer of 2018 and love what I do.

I'm currently writing Book 4 in the DI McKenzie Series, and Book 24 in the DI Giles Series.