Edgar Rice Burroughs wrote this tale of confused identity and royal intrigue in 1914 and 1915, as World War I was getting ready to happen: it means to be an homage to Anthony Hope's _Prisoner of Zenda._ But, of course, it isn't Hope writing, but Burroughs: the events that led to the war inform the book, and it speaks to the real events happening as Burroughs wrote. That makes it a very different story from Hope's almost-whimsical novel. Part of the...