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While You Sleep: A heart-wrenching psychological thriller that will keep you up all night

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Have you ever wanted to be a better version of yourself?

Eve Dawson would do anything to be a better mother. So when a pill promises to replace sleep with hours of extra productivity every day, she takes it. Within days, Eve is renovating the house at dawn, doing yoga before breakfast, and cooking from scratch. She is finally becoming the mother her daughter deserves.

Within weeks, she is losing her mind.

Eve doesn’t remember writing the notes left in Jada’s room overnight. Things go missing, or seem to have moved in the house. She just can’t explain it. And when Jada collapses at school, Eve realises with cold something is very wrong.

Is someone else in Eve’s home at night? She and her daughter might be in real danger, and Eve can no longer trust the one person she needs herself.

This propulsive and deeply moving psychological thriller, perfect for fans of Gillian McAllister, Audrey Audain and A.J. Finn, will have you reading late into the night – and then sleeping with the lights on.

Readers are addicted to S.J. King’s

OMG what a read – this book had me on edge from start to finish.’ Reader review, ⭐⭐⭐⭐⭐

Brilliant thriller that kept me turning the pages late into the night. I highly recommend this wild ride of a book!! A definite MUST READ!!’ Reader review, ⭐⭐⭐⭐⭐

‘I haven't read any other book that left me gasping for breath and with a pounding heart as much as this one did.’ Reader review, ⭐⭐⭐⭐⭐

‘This thriller had me kicking my sofa from tension… IT WAS PERFECTION.’ Reader review, ⭐⭐⭐⭐⭐

‘It’s been a long time since I’ve sat on the edge of my seat, devouring a book like I just did… You will binge it like the latest season of your favourite Netflix series.’ Reader review, ⭐⭐⭐⭐⭐

‘I would give this book six stars if I could – absolutely brilliant! Unputdownable.’ Reader review, ⭐⭐⭐⭐⭐

Absolutely fantastic…! Could not put the book down.’ Reader review, ⭐⭐⭐⭐⭐

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Published June 8, 2026

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S.J. King

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804 reviews22 followers
Review of advance copy received from NetGalley
May 16, 2026
I was given this book by NetGalley for an honest review-
A divorced mother trying to balance the single life, work, and motherhood longs for a good nights sleep!
She discovers. Pill that will do the—- she sleeps and then has energy for the garden, making dinners, painting etc.
everything’s seems awesome except she feels out of control. Her daughter Eve is worried about her mom.
Is this drug safe? Is it addictive? Should her mom really be using it?

Displaying 1 of 1 review