A reprinting of the story that introduces the world-famous characters of Sherlock Holmes, Dr. Watson, and Inspector Lestrade as they join forces for the first time to track a mysterious killer that stalks London's streets. Includes a new introduction by Steven Moffat, co-creator of the television series Sherlock.

Yellow fog is swirling through the streets of London, and Sherlock Holmes himself is sitting in a cocaine-induced haze until the arrival of a distressed and beautiful young lady forces the great detective into action. Each year following the strange disappearance of her father, Miss Morstan has received a present of a rare and lustrous pearl. Now, on the day she is summoned to meet her anonymous benefactor, she consults Holmes and Watson.