Kate Reynolds knows she didn't kill her best friend. So why did she plead guilty?
They say I'm a murderer.
Six years ago, Kate Reynolds was found holding the body of her best friend; covered in blood, and clutching the knife that killed her.
I plead guilty.
Kate has been in prison ever since, but now her sentence is up. She is being released.
But the truth is, I didn't do it.
There's only one person who can help: Private Investigator Madison Attallee, the first officer on the scene all those years ago.
But uncovering the truth means catching a killer.
'An absolutely gripping thriller. There will be more Madison Attalee, I hope.' Radio 4's Dame Jenni Murray
'Tough and uncompromising, I, Witness had me totally gripped. I'm looking forward to hearing more from PI Madison Attalee.' Alex Lake, author of Killing Kate, After Anna and Copy Cat
'Totally engaging, fast-paced and edgy. I, Witness kept me guessing till the very end. Pick this book up if you're after a page-turner with attitude.' Elle Croft, author of The Guilty Wife
Cracking thriller and a great female protagonist. Swearing, smoking, rock-music loving (and not neurotic or passive!) My kind of woman. - C.J. Tudor, author of The Chalk Man
I was swept away by this punchy, pacy thriller with its sharp characterisation and confident plotting. I devoured it in a single day. I particularly loved Madison's fabulously chain-smoking, hyper-feminine sharpness. There were so many things done well here - the presentation of domestic abuse, dysfunctional families, the uneven dynamic of female friendships that border on bullying - so much to enjoy. So looking forward to the next one. - Helen Callaghan, author of Dear Amy
Tough and uncompromising, I, Witness had me totally gripped. I'm looking forward to hearing more from PI Madison Attalee. - Alex Lake, author of Killing Kate, After Anna and Copy Cat
An absolutely gripping thriller founded on the horror of familial abuse and a great, flawed, female PI. There will be more Madison Attalee, I hope - Dame Jenni Murray