“The Black Stone,” he repeated. “ Der Schwarzestein. It’s like a penny novelette. And all this stuff about Karolides. That is the weak part of the tale, for I happen to know that the virtuous Karolides is likely to outlast us both. There is no state in Europe that wants him gone. Besides, he has just been playing up to Berlin and Vienna and giving my Chief some uneasy moments. No! Scudder has gone off the track there. Frankly, Hannay, I don’t believe that part of his story. There’s some nasty business afoot, and he found out too much and lost his life over it. But I am ready to take my oath that it is ordinary spy work. A certain great European Power makes a hobby of her spy system, and her methods are not too particular. Since she pays by piecework her blackguards are not likely to stick at a murder or two. They want our naval dispositions for their collection at the Marineamt ; but they will be pigeonholed⁠—nothing more.”

Just then the butler entered the room.