Hopalong Cassidy is one of the most enduring and popular heroes in frontier fiction. His legendary exploits in books, movies, and on television have blazed a mythic and unforgettable trail across the American West. Now, in the last of four Hopalong Cassidy novels written by Louis L'Amour, the immortal saddleman rides again -- this time into a lonely valley of danger and death. Hopalong Cassidy has received an urgent message from the dead. Answering...