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The Pie & Mash Detective Agency

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Pub Date 26 Feb 2026 | Archive Date 7 Mar 2026


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Description

Who is Nellie Thorne and why does she keep disappearing? Jane Pye and Simon Mash are on the case in this cosy crime mystery novel, perfect for fans of Janice Hallett and Robert Thorogood!


'Fans of Richard Osman will love it!' Jonathan Ross
‘A fun romp that sets off at a cracking pace, and never lets up’ Ian Moore
'Compelling and intriguing' J. M. Hall
'Absolutely delightful!' Janice Hallett

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Local schoolteacher Dev Hooper arrives home from work to find his girlfriend, Nellie Thorne, has vanished.

But she's not the first Nellie Thorne to disappear. In fact, she's the fifth in fifty years.

Enter Jane Pye and Simon Mash: a millennial couple who signed up for a private detective night class on a whim. When they're assigned Dev's case for their coursework, they quickly realise they’ve bitten off more than they can chew.

Armed with just six weeks of notes, matching trench coats, and questionable detective skills, they set out to solve a case that has baffled Kent's police for decades.

What links the missing Nellies? And why does everyone keep talking about ghosts!?

Is it an open and shut case? Not on your Nellie…


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Readers are loving The Pie & Mash Detective Agency!

Sharp, witty and wonderfully original’ L T Shearer, bestselling author of The Cat Who Caught a Killer

'A charming idea, packed with relatable characters, plenty of fun and enough twists to keep me guessing' F.L. Everett, author of Murder at Mistletoe Manor

‘A blissfully cozy mystery packed with funny moments and delightful little pleasures on each page’ Kelly Mullen, author of This is Not a Game

‘A really funny read, with two very endearing detectives' Faith Martin, bestselling author of the DI Hillary Greene series and the Ryder and Loveday mystery novels

'Like the dish in the title, I devoured it in one sitting' Sue Perkins

'Simon and Jane are the most lovable characters and the mystery they solve feels very fresh' 5-star reader review

'A fun cosy crime read' 5-star reader review

'A delightful read' 5-star reader review

'I just couldn’t put it down!' 5-star reader review

Who is Nellie Thorne and why does she keep disappearing? Jane Pye and Simon Mash are on the case in this cosy crime mystery novel, perfect for fans of Janice Hallett and Robert Thorogood!


'Fans of...


Available Editions

EDITION Other Format
ISBN 9781529950441
PRICE £16.99 (GBP)
PAGES 400

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Average rating from 61 members


Featured Reviews

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The Pie & Mash Detective Agency by J.D. Brinkworth is a fun cosy crime read. It follows a young couple, Jane Pye and Simon Mash, who live in South London. Jane is “between job” and on enrols Simon and herself onto a Private Detective night class. Part of the coursework is to investigate a case and present their findings back to the group.

They are assigned a real current case to investigate the disappearance of a young woman called Nellie Thorne. Her boyfriend, a Teacher called Dev Hooper, reported her missing when he got home and found that she’d vanished. What makes the case so unusual is that several women over the years, also called Nellie Thorne, had also disappeared from Kent. That fact really piqued my interest.

I loved reading how Jane and Simon managed the investigation around their lives. Simon works full-time, Jane is “between jobs” and looking for work and preparing for interviews whilst taking public transport down to Kent to investigate. Jane is completely committed to the course and wholeheartedly believes that she will be a great detective. In reality, they only have a few weeks lessons under their belts and have a strong gung-ho spirit. They throw themselves into the investigation feet first, carrying out surveillance, interviews and research. Their lack of planning and flying by the seat of their pants really does make for some humorous escapades. I was crying with laughter reading Simon’s first presentation on the case to the class. Whilst the investigation is ongoing, they attend night school classes and check in with their world-weary instructor Gavin, who steers them away from supernatural rabbit-holes and back to real detection practices.

Jane and Simon are very likeable characters, and the fact they are a couple and also investigators is rather fun and adds some frisson to the mix. The book feels like it’s the first in series, and I would really like to read more of Jane and Simon’s escapades, which will no doubt be peppered with sage advice from Gavin!

Huge thanks to NetGalley and the publishers, Random House UK, Cornerstone, for making this e-ARC available to me in exchange for a fair and honest review.

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The Pie & Mash Detective Agency focuses on a pair of wannabe detectives, attending an evening class to learn the ropes. The class gets given assignments, and the one that Jane Pye and Simon Mash are allocated relates to a Nellie Thorne, who has gone missing, leaving the boyfriend, Dev, at a loss to why she has disappeared. The thing is, it doesn't seem to be the first Nellie Thorne to have done so.

The mystery of Nellie then builds as Jane and Simon look deeper into the story, which seems to go back decades with instances in different locations to muddy the waters.

A fun, well-written and intriguing story keeps you guessing as more and more layers of the onion are peeled back to reveal... ah, you'll just have to read it!

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