Just past midnight, on February 3, just hours from their destination, the Dorchester was torpedoed and sank, throwing its passengers into the frigid waters and creating the worst single loss of an American personnel convoy during WWII. Many of the survivors credit the four chaplains with saving their lives. Those chaplains would become known as the "Immortal Chaplains" for their heroism in making the ultimate sacrifice. With no thought of themselves, they calmly helped men to safety through the chaos of their badly damaged ship, searched for spare life jackets for those without—eventually giving away their own life jackets and encouraging men in the freezing waters.

The celebrated story of the Immortal Chaplains is now joined for the first time in print by the largely untold story of another hero of the sinking of the Dorchester: Charles Walter David Jr. was a young Black petty officer aboard a Coast Guard cutter traveling with the convoy who bravely dived into the glacial water over and over again, even with hypothermia setting in, to try to rescue the men the chaplains had first helped and inspired to never give up. Through his efforts, he joins the Chaplains as one of the "Immortals."

Thoroughly researched and told in an engrossing nonfiction narrative, the book alternates between accounts told from the perspective of the Nazi U-boat captain and his crew (as found in their journals and later interviews), and the hunted—the men of the American convoy. Using his expertise as a law professor specializing in religious freedom and constitutional law, the author, Steven T. Collis, also paints a thought-provoking portrait of religious life in America during wartime and how American views of faith affected the chaplains and the men they served.

Page-turning and inspiring, The Immortals explores the power of faith and religious conviction and powerfully narrates the lives of five heroic men who believed in something greater than themselves, living lives of service and sacrifice for their country and their fellow man.