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In the Blink of an Eye

(The first book in the Kat and Lock series)
A novel by

2024 CrimeFest: Specsavers Debut Crime Novel Award (nominee)
2024 ILP John Creasey (New Blood) Dagger (nominee)
2024 Theakston Old Peculier Crime Novel of the Year (nominee)

SUNDAY TIMES BESTSELLER • Two detectives: one human, one AI. And a case that will test them both.

LONGLISTED: The Crime Writers��� Association’s John Creasey New Blood Dagger; Theakson’s Old Peculiar Crime Novel of the Year
NOMINATED: Capital Crime���s Overall Crime Book of the Year; Crimefest’s Specsavers Debut Crime Novel Award

Kat Frank knows all about loss. A widowed single mother, Kat is a cop who trusts her intuition, honed through years of on-the-beat police work. Picked to lead a pilot program that has her paired with Lock, an AIDE (Artificially Intelligent Detective Entity)—a hologram that is activated by a device on Kat’s wrist—Kat’s gut reactions about people and motives come up against Lock’s statistical calculations and data analysis that can be devised in seconds.

But as the two missing person’s cold cases they are reviewing suddenly become active, Lock is the only one who can help when the case begins to target Kat personally. AI versus human experience. Logic versus instinct. With lives on the line, can the pair work together to solve the mystery in time?

A dazzling debut from an exciting new voice,
In the Blink of an Eye asks us what we think it means to be human.

Genre: Mystery

Praise for this book

"I tore through this one in a day. One of the best new crime partnerships to emerge in fiction." - Simon Bestwick

"It's phenomenal . . . Perfect blend of police procedural and techno thriller and kept me guessing right to the end!" - Steph Broadribb

"A fresh and intriguing detective double act - I fell hard for all-too-human Kat and her AI colleague Lock . . . a riveting cold case mystery told with compassion and verve." - Louise Candlish

"An absolute cracker of a thriller. Such an original concept and so brilliantly executed, but also a story to make you think, and one that throws up unexpected questions about life, grief, loss, and the human mind . . . If you love a police procedural, you'll adore this. If you like a book to make you think a little more deeply, you will also love this. As someone who is a fan of both, I can't recommend it enough." - Joanna Cannon

"In the Blink of an Eye is fresh, innovative and very very clever. Flawlessly paced, plotted and researched, it's laugh out loud, heart-achingly sad and doesn't have a dull moment. I raced through it. Simply sensational." - M W Craven

"Everything you could hope for in a thriller: heartbreaking, intelligent, deftly plotted and so original." - Fiona Cummins

"Fabulous! A rare crime novel truly as much about character as it is about plot - cried at the ending - huge potential series exploring the human AI connection. Loved." - Lindsay Galvin

"A standout debut with a unique and thrilling take on the detective novel. Engaging, exciting and superbly readable. I loved it." - Sarah Hilary

"Jo Callaghan makes her entry into the crowded police procedural genre with a fresh take on the buddy-buddy cop trope. In the Blink of an Eye predicts the near future when police officers and their AI counterparts will work hand-in-holographic-hand. The human-AI interactions between the lead protagonists as they pursue their quarry are illuminating and, at times, hilarious. Provocative and compelling. A TV series seems a certainty." - Vaseem Khan

"In the Blink of An Eye captured me from the first page and kept me enthralled until the last. Jo Callaghan shakes up the police procedural with a truly original premise that is both compelling and filled with heart. Highly recommended." - Olivia Kiernan

"SO good. A really clever twist on the police procedural that asks big questions about instinct, bias, and what it means to be human while also delivering a cracker of a plot. Loved it." - Phoebe Locke

"This has to be a strong contender for crime debut of the year." - T M Logan

"The most original crime novel you'll read this year." - Clare Mackintosh

"I started reading this morning and ten hours later I've finished it! It's so, SO good - really properly compelling, impossible to put down - I was desperate for the solution to the mystery - but so human and moving and massively thought-provoking on what makes us human." - Laura Marshall

"Completely different and utterly brilliant." - Amanda Reynolds

"It's so much more than a dystopian police procedural and asks questions about who we are and what it means to be human. Brilliant." - Nikki Smith

"Thrilling, thought-provoking and cinematic - a slam dunk for movie/TV adaptation." - Alexandra Sokoloff

"The kind of fresh and fearless debut I just adore. Wildly original, heartfelt, funny, and properly thrilling. Take a bow, Jo Callaghan." - Chris Whitaker

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