This Is Not a Game
Format:Hardback
Publisher:Cornerstone
Published:10th Apr '25
Currently unavailable, our supplier has not provided us a restock date
This hardback is available in another edition too:
- Paperback£9.99(9781804951606)

Introducing your new favourite whodunnit. Perfect for fans of Gilmore Girls and Knives Out.
'Fabulous, over-the-top fun' The Guardian
'A delightful game of twists' Chris Chibnall
'Slick and witty' Daily Mail
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Two unlikely detectives. A killer cocktail of suspects.
A Gibson martini garnished with three silverskin onions is 77-year-old Mimi’s favourite cocktail. It is best served with a crossword puzzle, not as an apéritif at Jane Ireland's extravagant auction party.
But given Mimi has been blackmailed into attending Jane's event, at a grand old mansion on Mackinac Island (Michigan’s answer to The Hamptons), there are worse drinks she could spend an evening sinking.
Thankfully for her, she's roped her granddaughter, Addie – who is escaping the heartache caused by her manipulative ex-fiancé – into accompanying her. While Addie spots celebrities and socialites in the manor's labyrinth of dark rooms and Mimi wonders how to confess the real reason for her presence at the soiree, a scream pierces the air.
Jane is dead.
And when a second body turns up, Mimi and Addie soon become the unlikeliest of sleuths in a race to narrow down the suspects.
In a house that contains as many secrets as the people within it, it’s going to take more than a Gibson to survive the night…
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More love for This Is Not a Game...
'Miss Marple meets Only Murders in the Building. Entertaining from start to finish' Jennie Godfrey
'Agatha Christie brought bang up to date' Clare Mackintosh
'Deliciously twisty' Lucy Clarke
'A thriller with a twist!'Cosmopolitan
'A quirky variation on Golden Age locked room mysteries with a modern zest of eccentricity and humour' Crime Time
‘This is locked-room murder mystery at its best’ i Paper
‘…A grand finale reveal Poirot would be proud of’Woman & Home
'A wonderfully vibrant take on the classic whodunit, This is Not A Game tackles the locked room mystery with warmth and humour, serving up a crime solving duo that I couldn’t stop rooting for. After finishing the book, I was craving three things - a visit to Mackinac island, a Gibson, and more from author Kelly Mullen!' Kristen Perrin
'Mullen’s...
Slick and witty * Daily Mail *
Mullen debuts with an impressive closed-circle whodunit * Publishers Weekly *
A thriller novel with a difference * Cosmopolitan *
Fabulous, over-the-top fun * The Guardian *
Locked room murder mystery at its best * The i Paper *
Thrilling and heartwarming... This Is Not a Game is a playful mix of classic whodunnit and modern wit stirred to perfection * Criminal Element *
Despite the title, this is absolutely a game from the first word to the last * Kirkus *
A fun, atmospheric debut with sharp humour and classic whodunnit charm * Dead Good Books *
A quirky variation on Golden Age locked room mysteries with a modern zest of eccentricity and humour, US author Kelly Mullen’s debut is very much a crowd pleaser in the mould of the KNIVES OUT movie series * Crime Time *
A grand finale reveal Poirot would be proud of * Woman & Home *
ISBN: 9781529939064
Dimensions: 242mm x 161mm x 34mm
Weight: 595g
384 pages