Os Planos do Submarino Bruce-Partington / O Pé do Diabo / A Caixa de Papelão

The Bruce-Partington Submarine Plans: A British espionage case in which secret submarine plans are stolen and a young government official is found dead near train tracks in London. The Devil's Foot: A suspenseful story set in Cornwall, where Sherlock Holmes investigates the mysterious and insane deaths of family members after a macabre and sudden nighttime exposure. The Cardboard Box: A tale in which a woman receives a postal package containing two severed human ears, leading Holmes to uncover a past of jealousy and a crime of passion.