It’s Not What You Think: Escape with the gripping new psychological thriller for 2026, an instant nu

‘I always see the twists coming – but not this time’ LEE CHILD
Don't miss the jaw-dropping new thriller from Sunday Times bestseller Clare Mackintosh!
YOU THINK YOU KNOW THE PEOPLE YOU LOVE

Nadeeka is certain Jamie is having an affair. She knows the tell-tale signs.

She’s been here before.

YOU THINK YOU KNOW WHO YOU CAN TRUST

When Jamie claims to be at work late, she knows he’s lying. He’s with another woman, and she’s determined to catch him in the act.

YOU THINK YOU KNOW HOW THE STORY ENDS

But when Nadeeka arrives home to confront him, Jamie can't explain himself. The house has become a crime scene…

Jamie is dead.

IT’S NOT WHAT YOU THINK

Praise for IT'S NOT WHAT YOU THINK:
'Madly twisty and super pacy and so so clever' LISA JEWELL

'A nail-biter of a thriller' SHARI LAPENA

‘I finished it in a day unable to put it down … jaw-dropping twists’ CLAIRE DOUGLAS

'An extraordinarily clever plot, this was one of my favourite books of the year’ ANDREA MARA

‘Clare Mackintosh has done it again with another unguessable twist’ ERIN KELLY

‘The book everyone will be talking about … more twists and turns than an episode of Line of Duty’ C.L. TAYLOR

‘A brilliant twist that you really won’t see coming’ NIKKI SMITH

‘This book is so addictive it should come with a warning’ ALICE FEENEY

‘The best twist I’ve read all year’ HOLLY SEDDON

‘Her best thriller yet … What a triumph' JILL MANSELL

Clare Mackintosh's book 'It’s Not What You Think' was a No.1 Sunday Times bestseller w/c 2026-03-30.

Welcome to my Amazon Author page. My latest book is IT’S NOT WHAT YOU THINK, a standalone big-twist thriller and (I'm delighted to say!) an instant #1 Sunday Times bestseller. If you like fast-paced, thought-provoking fiction with compelling and relatable characters, I think you'll enjoy it.

I'm the author of I LET YOU GO, I SEE YOU, LET ME LIE and HOSTAGE, as well as three books in the DC Ffion Morgan series - THE LAST PARTY, A GAME OF LIES and OTHER PEOPLE’S HOUSES: page-turning thrillers that have sold more than three million copies around the world.

I’m also the author of AFTER THE END, a family drama about an impossible choice that threatens to tear a couple apart; and I PROMISE IT WON'T ALWAYS HURT LIKE THIS, a memoir about navigating grief.

If you click the yellow 'follow' button, Amazon will send you an email when I have a new release, or if there's a special deal you might be interested in. It's the best way to make sure you never miss a book. You’ll also find me on Facebook, Instagram or TikTok at @ClareMackWrites

More praise for IT'S NOT WHAT YOU THINK:

‘A riveting read that wrong-foots you time and time again … the definition of a one-sitting read’ JOHN MARRS

‘I’m a huge fan of Clare Mackintosh and right now she’s top of her game. With her trademark twists, skilful plotting and her natural instinct for storytelling, Clare will always be one of my go-to reads’ HEIDI PERKS

‘Absolutely brilliant! Clever, thought-provoking, and gripping. I was hooked from the first page’ JO JAKEMAN

'An immensely readable thriller for these troubled times. I flew through it' SARAH HILARY

'Astonishing! Utterly compelling and whiplash-inducingly twisty. Actually couldn't put it down' RACHEL WOLF

'An absolute treat of a crime novel … a thought-provoking read' SINEAD CROWLEY

‘A masterclass in suspense! I was hooked from the opening chapter to the very last word … And that twist – wow!’ STEPH BROADRIBB

Praise for Clare Mackintosh:

'Wickedly fun and smartly plotted' LUCY CLARKE

'Packed with suspects, twists and turns' ALEX MICHAELIDES

'Twisty and clever, with layered characters' KARIN SLAUGHTER

'Devilish, witty and wonderful' CHRIS WHITAKER

'Wonderfully assured and gripping' PETER JAMES