Book excerpt: This early work by Robert Louis Stevenson was originally published in 1885 and we are now republishing it with a brand new introductory biography as part of our Cryptofiction Classics series. 'Olalla' is a short story about an English soldier recovering from his wounds in Spain where he stays with a family that keep a dark secret. Robert Lewis Balfour Stevenson was born in Edinburgh, Scotland in 1850. . In 1880, he married Fanny Van de Grift, and they moved between France, Britain and California together. It was during these years that Stevenson produced much of his best-known work - 'Treasure Island', in 1883, 'The Strange Case of Dr Jekyll and Mr Hyde', in 1886, and 'Black Arrow', in 1888. The Cryptofiction Classics series contains a collection of wonderful stories from some of the greatest authors in the genre, including Ambrose Bierce, Arthur Conan Doyle, Robert Louis Stevenson, and Jack London. From its roots in cryptozoology, this genre features bizarre, fantastical, and often terrifying tales of mythical and legendary creatures. Whether it be giant spiders, werewolves, lake monsters, or dinosaurs, the Cryptofiction Classics series offers a fantastic introduction to the world of weird creatures in fiction.