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 there's someone out there who doesn't want Kate digging up the past. Someone who is willing to keep the truth buried at any cost.What everyone is saying about this gripping debut:'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'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'Had me hooked within two pages, it has every bit as much appeal as some of the bestsellers of the last few years, like Girl on the Train.' Robert Scragg, author of What Falls Between the Cracks