Forgiving myself after killing a classmate

When Lis Cashin was 13, she took part in a javelin competition in her school sports day. But in a freak accident, the javelin veered off course, and a friend of hers was killed. Lis has spent decades trying to deal with the tragedy, and learning how to forgive herself. Presenter: Jo Fidgen Producer: Katy Davis Image: Lis Cashin Credit: James Muller