

Holmes confronts an exotic poison that shatters a family's peace and sanity.
When a respectable household on the Cornish coast is shattered by a night of chilling delirium and inexplicable death, Dr. Watson and Sherlock Holmes are summoned to untangle a mystery that reads like folk superstition crossed with forensic detective work. The case turns on an exotic, toxic root—whispered about as the "Devil's Foot"—and a string of unsettling details: eerie laughter in the night, convulsions, and a locked room that stubbornly refuses to yield answers. Holmes applies his razor-sharp observation and cool logic to peel back layers of fear, motive, and science, while Watson records the human drama behind a deceptively simple, haunting puzzle.