The Lost World is a novel released in 1912 by Sir Arthur Conan Doyle concerning an expedition to a plateau in the Amazon basin of South America where prehistoric animals (dinosaurs and other extinct creatures) still survive. It was originally published serially in the popular Strand Magazine and illustrated by New-Zealand-born artist Harry Rountree during the months of April-November 1912. The character of Professor Challenger was introduced in this book. The novel also describes a war between indigenous people and a vicious tribe of ape-like creatures. Cover by the lovely @FaithMurri.

The Return of Sherlock Holmes is a collection of 13 Sherlock Holmes stories, originally published in 1903-1904, by Arthur Conan Doyle. The stories were published in the Strand Magazine in Great Britain, and Collier's in the United States. Cover made by the wonderful @-capetown

The Adventures of Sherlock Holmes is a collection of twelve stories written by Arthur Conan Doyle featuring his famous detective.

A Study in Scarlet is a 1887 detective novel by British author Arthur Conan Doyle. Written in 1886, the story marks the first appearance of Sherlock Holmes and Dr. Watson, who would become two of the most famous characters in popular fiction. The book's title derives from a speech given by Holmes, an amateur detective, to his friend and chronicler Watson on the nature of his work, in which he describes the story's murder investigation as his "study in scarlet": "There's the scarlet thread of murder running through the colourless skein of life, and our duty is to unravel it, and isolate it, and expose every inch of it." Cover by the wonderful @-capetown