In The Walking Stick, Orson Welles introduces listeners to the eerie world of the Black Museum at Scotland Yard, a repository of objects associated with murder. The focus centers on Dr. Richard Martinson, a physician whose life is marred by personal and professional turmoil. His wife, Sylvia, suffers from chronic illness, and the arrival of her mother, Mrs. Toomey, adds strain to their already fragile household. As Sylvia's health declines, suspicions arise regarding the true nature of her ailments.