Can you believe your own eyes? Can you trust your own memory? Why is it that so many social scientists and so many in the police and the judiciary are so very concerned about eye-witness testimony. Mike Williams talks to an attorney at the Innocence Project in New York, a retired judge, a professor of psychology and a memory expert in an attempt to find out why we try – and often fail – to accurately recall a face or an event.

(Photo: Black and White image of four men in a suspect line up. Credit: Shutterstock)