A Calculated Murder

?The Crime Writers' Association Read of the Month for September 2025! ?

Una McMurray is puzzled. Surely, statistically, the international cat show scene shouldn't be this... lethal?

Keen to make her mark in her new job in pet insurance, Una's first task is to calculate whether cat ownership extends human lifespan. Tragically, that's not the case for prizewinning cat owner Jeff Bridgely - a most improbable accident has ended his dreams of triumphing at the upcoming International Cat Show.

When a second competitor dies in mysterious circumstances, the maths just doesn't add up. Una vows to resolve this suspicious data discrepancy and impress her new project team, especially condescending Tim and ambitious trainee Patti.

After borrowing Pedro the cat and brushing up on her feline facts, Una dives deep undercover in the cutthroat world of cat shows. Competition is fierce, but what Pedro lacks in pedigree, he makes up for in character. Although as Pedro's odds of winning shorten, so do Una's chances of survival...

Armed with razor-sharp logic, analytical expertise and a scruffy moggy sidekick, can actuary Una catch the cat show killer before she becomes the latest fatal statistic?

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Readers love the Una McMurray Mysteries series!

'Three actuaries walk into a cat show in Balham . . . high-stakes hilarity ensues. Amongst fictional detectives, Una McMurray is a gem. Her voice combines wit, warmth and satire. This is such a fun read.' - Robert Holtom, author of A Queer Case

'Clever and very funny' - Ian Moore, author of Death and Croissants

'Eleanor Oliphant meets The Thursday Murder Club' - Jessica Irena Smith, author of The Night of the Crash

'Deliciously fun mystery that gest serious about the body count, with clues that really do add up! Loved following Una seeing the risks at every turn - and having to overcome them if she's to save those she loves. #TeamPedro - Sarah Yarwood-Lovett, author of the Dr Nell Ward Mysteries series

'Witty and fun' - Woman's Own

'Terrifically funny and endearing' - Belfast Telegraph

'Impressive... full of unusual ideas and amusing relationships' - Morning Star