For the ITV series "It Ain't Necessarily So", John McCarthy returned to the Holy Land to examine the validity or otherwise of stories from the Old Testament. Bringing in history, archaeology and new research, his intriguing journey is the basis of this book which looks at: the truth behind Jericho's "tumbling" walls; the mystery of the Promised Land; who was Solomon; when did the Jews become monotheists; what was Zion; and when was the text of the Old Testament actually written?