While the media bombards us with disturbing images and terrorist threats from fundamentalist militants of the Islamic faith, many Christians are still do not know the basic differences between the Muslim and Christian faiths. How closely related are the Bible and the Koran and what does the latter teach? Is Islam a peaceful religion or does it permit acts of terrorism? In his deeply researched new book, James Gauss insightfully presents the stark contrasts between the two faiths enabling people of all religions to understand the differences between the two. Gauss offers a definitive clarion call to both the Church and society by shedding light on Islamic history and present-day practice.