And so far his adversary had completely outwitted him. In spite of his own elaborate precautions, his investigations into the death of Dr. Morlandson were known and had been treated as the most natural thing in the world. For his own part, he had learnt very little that he had not known before. Certainly his theory as to the motives for the murders in Praed Street had been confirmed. This was a small satisfaction to place against the Professor’s chagrin. He had also learnt that the Black Sailor, in spite of official scepticism, was an actual person. But of his identity, or the means by which the crimes had been committed, he had learnt nothing. From the police point of view he had failed utterly, since he had failed to secure any information which could possibly lead to an arrest.