The Adventure of Black Peter by Arthur Conan Doyle

A brutal seaman, known as “Black Peter,” is found murdered in his own cabin, skewered to the wall with a harpoon. Holmes investigates the violent scene and navigates through clues involving maritime secrets and a mysterious young man. The plot explores motives of revenge, hidden identities, and past crimes at sea. Using clever bait, Holmes traps the killer in a dramatic setup. It’s a gritty, nautical mystery with echoes of the darker side of human nature.