caption: The image shows an old book with a picture of a man in a boat on the cover. The man is wearing a long coat and a hat, and is holding a gun in his right hand. He is standing in front of a wall with a window, and there are several other people in the boat, some of whom are lying on the ground. The text on the book reads "Aus den Geheimakten des Welt-Detektivs".