A famous naturalist seeks a near-extinct species of bird found only on the rarest of lands in "Audubon in Atlantis." A young American on a European holiday finds himself storming an enchanted German castle in "The Catcher in the Rhine." The philosopher Sokrates plays a key role in the Athenian victory over the Spartans in "The Daimon." Centaurs take a sea voyage aboard "The Horse of Bronze" to a land where they encounter a strange and frightening tribe of creatures known as man. London's most famous detective, Athelstan Helms, and his assistant Dr.