In Conan Doyle's final six stories featuring Sherlock Holmes and Dr. Watson, the duo face some of their most challenging cases yet. In "The Adventure of the Illustrious Client, " Holmes puts his own life in danger as he tries to cut short a young girl's infatuation with the notorious wife-murderer Baron Gruner.Why is Mrs. Maberley offered a handsome price for the "Three Gables, " provided she leaves at once and takes nothing with her?Even in his retirement, Holmes' skills are called upon as he follows a trail of death on the Sussex coast in "The Adventure of the Lion's Mane.