In 2002, an ancient burial box is unveiled to an astonished world. The casket, known as an ossuary, bears a tantalizing inscription: James, son of Joseph, brother of Jesus. It is immediately hailed as one of the most important religious relics ever found - the only material evidence of Jesus and his family's existence on earth. But the ossuary is immediately shrouded in controversy: although it is carbon dated to the 1st century, has Jesus' name been added in later years or is it authentic? The box also triggers another question: Who was James?