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.

The Valley of Fear is the fourth and final Sherlock Holmes novel by Sir Arthur Conan Doyle. It is based on the supposedly real-life exploits of the Molly Maguires and Pinkerton agent James McParland. Holmes decodes a cipher warning from Moriarty's organization for "Douglas" in "Birlstone," but a corpse is there already. When Mr. Douglas blows the head off his American assassin, he dresses the body as himself, and hides, to throw off the chase for good. Holmes guesses the missing dumb-bell weighted down the killer's clothes in the moat. The calling card left, VV341, is Vermissa Valley Lodge...

In 1888 Mary Morstan comes to Holmes with two puzzles. The first the disappearance ten years earlier of her father Captain Arthur Morstan in 1878. The second puzzle is that she has received a pearl in the mail every year for the last six years. Accompanying the last pearl was a letter remarking that she had been wronged and requesting a meeting. Originally published in 1890 'The Sign of Four' is the second novel featuring Sherlock Holmes written by Sir Arthur Conan Doyle. Includes article on the history of the novel.

'A Study in Scarlet' begins with the reminisces of Dr. John Watson M.D. veteran of the war in Afghanistan on how he met his long-time colleague and friend Sherlock Holmes, a rather strange, eccentric and brilliant whose true profession remains a mystery to those around him. Originally published in 1887 'A Study in Scarlet' is the first novel featuring Sherlock Holmes written by Sir Arthur Conan Doyle. Includes article on the history of the novel, the writer and the inspirations for the character. Gift Edition includes a section for a personal inscription.