Emma can't sleep.

CHECK THE WINDOWS

It's been like this since her big 4-0 started getting closer.

LOCK THE DOORS

Her mother stopped sleeping just before her 40th birthday too. She went mad and did the unthinkable because of it.

LOOK IN ON THE CHILDREN

Is that what's happening to Emma?

WHY CAN'T SHE SLEEP?

'If you loved Behind Her Eyes, prepare to be totally and utterly blown away by Insomnia. Sarah Pinborough is a twisted genius' Lisa Jewell

'Pinborough writes like an absolute dream about an absolute nightmare. I loved it!' Richard Osman

'Another mind-twisting, genre-bending rollercoaster from Queen of WTF Sarah Pinborough' Ruth Ware

'Queen of the impossible, this heart pounding thriller will have you up all night' Clare Mackintosh

'Creepy as all get out - a gaslighting masterclass' Ian Rankin

'Pinborough's unsettling, remorseless psychological thriller is horribly plausible and expertly plotted' Sunday Times

'Insomnia is a twisted, dark ride that keeps you gripped, unable to look away. Utterly addictive and highly recommended' Lucy Clarke

'Don't start this at night - it's guaranteed to steal your sleep' Cara Hunter

'One crazy sleepless ride building up to a hideously tense climax. Expertly done - Sarah Pinborough is the queen of unsettling, twisty reads' Harriet Tyce

'This terrifying thriller about a family under threat from within is a total page-turner' Gilly Macmillan

'Absolutely brilliant, completely unputdownable and so satisfying' Jenny Colgan

'A whip smart page turning triumph' Jane Shemilt

'Compelling and alarming with just a touch of the paranormal' Catherine Cooper

'An absolute must-read' Joe Hill

'Well crafted and insanely clever' C. M. Ewan

'A genuine up all night, compellingly twisty thriller of a book' Araminta Hall