Remember Me: The gripping, twisty page-turner you won't want to put down

Last night my sister was murdered. The police think I killed her. I was there. I watched the knife go in. I saw the man who did it. And heard him laugh because he knows he'll never get caught. He knows I have prosopagnosia - I can't recognise faces. And if I don't find the man who killed my sister, I'll be found guilty of murder.