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FROM THE AUTHOR OF THE SUNDAY TIMES BESTSELLER IN THE BLINK OF AN EYE
Winner of the Theakston Old Peculier Crime Novel of the Year 2024
Winner of the Crime Writers’ Association ILP John Creasey (New Blood) Dagger 2024

One detective driven by instinct, the other by logic.
It will take both to find a killer who knows the true meaning of fear . . .

When the body of a man is found crucified at the top of Mount Judd, DCS Kat Frank and AIDE Lock – the world’s first AI detective – are thrust into the spotlight with their first live case.

But when they discover another man dead – also crucified – it appears that the killer is only just getting started. When the Future Policing Unit issues an extraordinary warning to local men to avoid drinking in pubs, being out alone late at night and going home with strangers, they face a hostile media frenzy. Whilst they desperately search for connections between the victims, time is running out for them to join the dots and prevent another death.

And if Kat and Lock know anything, it’s that killers rarely stop – until they are made to.

‘Confirms Callaghan as a new force to be reckoned with in crime’ Daily Mail

‘Jo Callaghan is an outstanding talent’ Jane Casey

‘I couldn’t turn the pages fast enough’ Nikki Smith

‘A smart, agile, immaculately plotted and moving thriller that is unswervingly gripping and scary, and at the same time beautifully tender and humane’ Nicci French

‘With Leave No Trace, Jo Callaghan cements her status as a crime fiction force to be reckoned with’ Caz Frear

‘Brilliant, rapidly paced and plotted . . . Another masterpiece’ Imran Mahmood

‘Every bit as smart, compelling and insightful as her debut . . . A terrific read!’ Gytha Lodge

‘Jo Callaghan has done it again in this intricately plotted, humorous and incredibly moving thriller . . . I absolutely loved it’ Laura Marshall

‘Balanced, nuanced, intelligent, provocative’ Amanda Reynolds

‘Another exciting and thought-provoking book from Jo Callaghan that combines cutting-edge tech with a classic police procedural . . . Hugely human and big-hearted. Brava!’ Sarah Hilary