THE TWO TOWERS, the second part of Tolkien's LOTR trilogy, takes the reader on a remarkable, almost breathless journey: chasing orcs who have captured Merry and Pippen; galloping across the plains of Rohan with Riders of the Rohirrim; the bloody battle of Helm's Deep; the vast wasteland of Isengard; the perilous journey of Frodo and Sam to the borders of Mordor, accompanied by a most unlikely ally. Unlike "The Fellowship of the Ring," Tolkien's first...