"Quite so, and into that gloomy courtyard which surrounds the house of Dr. Etwald," added Major Jen, with a satisfied smile, "Battersea saw the doctor take the body out of the carriage and carry it into the house. Then, on his return--Etwald's I mean--he unharnessed the horse and put it into the stable; also the carriage into the coach-house. Is that not so, Mr. Arkel?"
"Battersea told you," stammered Arkel, amazed at his insight.
"I assure you he told me nothing. But I am as clever as Battersea, and can put two and two together. Next day Battersea went to Etwald, did he not, and tried to blackmail him, but this clever doctor compelled him to keep silent."
"It's all quite true," assented the inspector, thunderstruck; "though how you guessed it all I cannot say. But, as you know so much, perhaps you can tell me one thing more, which bothers me not a little. How did Dr. Etwald compel Battersea to keep silence?"
"Very easily," said Jen, with a shrug. "Battersea is half negro. The black race adore the Voodoo stone, of which Dr. Etwald is the possessor. Etwald simply threatened Battersea with the vengeance of the Voodoo stone if he spoke. Therefore, he held his tongue, and was forced to confess all this only by your threatening to have him arrested as the murderer of Mr. Alymer.
"I did threaten him; but how you know--"
"I know a great many things, Mr. Inspector. For instance, I know that the woman who assisted Dr. Etwald to steal the body is Dido, the negress of Mrs. Dallas; also that Dr. Etwald is a murderer as well as a thief."
"Heavens! If I had only known that I would have had the warrant altered."
"What!" cried Jen, with an expression of ferocious joy lighting up his face, "you have a warrant for the arrest of Etwald?"
"Yes, but on the charge of stealing the body only. I took it out after hearing the evidence of the tramp, Battersea."