?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.?Sherlock Holmes Consulting Detective 221B Baker Street London.This is where begins a historical partnership between Dr. Watson?the archetypal gentleman from the Victorian era?and the eccentric, legendary sleuth, Sherlock Holmes. Join them as they gather clues, ranging from bloodstains and footprints to cigarette ash and wedding rings and arrive at unusual and surprising conclusions. This book is a collection of the four novels written by Sir Arthur Conan Doyle: A Study in Scarlet (1887), The Sign of the Four (1890), The Hound of the Baskervilles (1902) and The Valley of Fear (1915). Featuring the timeless detective Sherlock Holmes, these novels have been successfully engrossing readers for more than a century now.