Danger and personal crisis on land, sea, and in the air combine with a level of spiritual warfare that is unparalleled in a Christian book. "Crucible" is a page-turning thriller that runs side by side with the phenomenal Left Behind series that has sold in excess of 55 million copies. The world is exploding in confusion and terror following the disappearances in book one, "Apocalypse Dawn." Meanwhile, Army Rangers and Marine Special Forces are struggling to keep the peace, while fighting spiritual battles of their own in the sands of Turkey and back home.