
I Know What I Saw
A completely addictive psychological thriller with a mind-blowing twist
Kathryn Croft(Author)
Headline Book Publishing
Will be published approx. on 13. August 2026
Book
Paperback/Softback
384 pages
978-1-0354-3833-4 (ISBN)
Description
You witnessed a murder.
But no one believes you.
When Ria moves with her husband to Silverleaf Heights, a lavish gated community, she tries to settle in and recover from the accident that nearly took her life. On the surface, everything is perfect; the neighbours welcome her with open arms, even though she doesn't feel she belongs, and she is safe and secure with all the security cameras and the locked gate.
Or is she?
Late one night, Ria witnesses a woman being murdered in the communal garden. When the police go to investigate, they find the neighbours away and no sign of disturbance. But Ria knows what she saw, and is determined to find out who the woman was - even if no one else believes her.
Then an anonymous WhatsApp appears on her phone - a video of another woman being murdered. When she looks closely, she quickly realises the woman is her. The message disappears, as if it never existed, but the meaning is clear: stop looking for the dead woman, or you'll be next.
Readers are gripped by I Know What I Saw:
'Kathryn Croft has rendered me speechless with her latest psychological thriller' ?????
'This book had me accusing EVERYONE' ?????
'This was a deliciously thrilling story' ?????
'I loved every single minute of this book . . . One of my new favourite authors' ?????
'A tense, addictive thriller packed with secrets, danger, and plenty of suspense' ?????
'Loved!!!!! My mind was blown away' ?????
'This book is all I look for in a thriller, fast moving, plot forward, twisty and satisfying when it all comes together in the end' ?????
'Just when I thought I had it figured out . . . NOPE! This kept me guessing until the end' ?????
But no one believes you.
When Ria moves with her husband to Silverleaf Heights, a lavish gated community, she tries to settle in and recover from the accident that nearly took her life. On the surface, everything is perfect; the neighbours welcome her with open arms, even though she doesn't feel she belongs, and she is safe and secure with all the security cameras and the locked gate.
Or is she?
Late one night, Ria witnesses a woman being murdered in the communal garden. When the police go to investigate, they find the neighbours away and no sign of disturbance. But Ria knows what she saw, and is determined to find out who the woman was - even if no one else believes her.
Then an anonymous WhatsApp appears on her phone - a video of another woman being murdered. When she looks closely, she quickly realises the woman is her. The message disappears, as if it never existed, but the meaning is clear: stop looking for the dead woman, or you'll be next.
Readers are gripped by I Know What I Saw:
'Kathryn Croft has rendered me speechless with her latest psychological thriller' ?????
'This book had me accusing EVERYONE' ?????
'This was a deliciously thrilling story' ?????
'I loved every single minute of this book . . . One of my new favourite authors' ?????
'A tense, addictive thriller packed with secrets, danger, and plenty of suspense' ?????
'Loved!!!!! My mind was blown away' ?????
'This book is all I look for in a thriller, fast moving, plot forward, twisty and satisfying when it all comes together in the end' ?????
'Just when I thought I had it figured out . . . NOPE! This kept me guessing until the end' ?????
More details
Language
English
Place of publication
London
United Kingdom
Publishing group
Headline Publishing Group
Product notice
Paperback (UK-B)
Dimensions
Height: 198 mm
Width: 129 mm
ISBN-13
978-1-0354-3833-4 (9781035438334)
Copyright in bibliographic data and cover images is held by Nielsen Book Services Limited or by the publishers or by their respective licensors: all rights reserved.
Schweitzer Classification
Other editions
Additional editions

Kathryn Croft
I Know What I Saw
A completely addictive psychological thriller with a mind-blowing twist
E-Book
06/2026
Headline
€2.99
Available for download
Person
Kathryn Croft is the bestselling author of sixteen psychological thrillers, with over 2 million copies sold worldwide. Her breakout novel, THE GIRL WITH NO PAST, was a number one Amazon bestseller and earned her a spot on the Wall Street Journal bestsellers list. Her fourth novel, THE GIRL YOU LOST, has been optioned for TV.
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After many years living in London, Kathryn returned to her roots in Guildford, Surrey, where she lives with her husband and two young children.
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After many years living in London, Kathryn returned to her roots in Guildford, Surrey, where she lives with her husband and two young children.