This alternate history, time travel, WWII-era action-adventure tale mixes fact and fantasy as a prequel to the 2013 "Travelers of the Gray Dawn." In both novels the Confederate States of America becomes the landscape and backdrop for a variety of characters who must navigate through what are essentially foreign lands. In Voyagers, much of the action is set along the East Coast of the mid-Atlantic former U.S. as Nazi U-boats meet U.S. Destroyers and...