Small backs of children - Lidia Yuknavitch

In a war-torn village in Eastern Europe, an American photographer captures a heart-stopping image: a young girl fleeing a fiery explosion that has engulfed her home and family.

It becomes an icon for millions, winning acclaim and prizes - and a subject of obsession for one writer, the photographer's best friend, who has suffered a tragedy of her own.

With the flash of a camera, one girl's life is shattered and another's is altered forever.