The superintendent, on hearing my tale, suggested that we should go at once to Murdock's house in Melville Gardens. We did so, but it was empty, Murdock, his wife, and Wickham having thought it best to decamp. The superintendent insisted, however, on having the house searched, and in a dark closet at the top we came upon a most extraordinary contrivance. This was no less than an exact representation of the agent's head and neck in wax. In it was a wonderfully skilful imitation of a human larynx, which, by a cunning mechanism of clockwork, could be made exactly to simulate the breathing and low moaning of a human being. This the man had, of course, utilized with the connivance of his wife and Wickham in order to prove an alibi, and the deception was so complete that only my own irresistible curiosity could have enabled me to discover the secret. That night the police were fortunate enough to capture both Murdock and Wickham in a Liverpool slum. Seeing that all was up, the villains made complete confession, and the whole of the black plot was revealed. It appeared that two adventurers, the worst form of scoundrels, knew of Cressley's great discovery in Western Australia, and had made up their minds to forestall him in his claim. One of these men had come some months ago to England, and while in Liverpool had made the acquaintance of Murdock. The other man, Wickham, accompanied Cressley on the voyage in order to keep him in view, and worm as many secrets as possible from him. When Cressley spoke of his superstition with regard to the turret room, it immediately occurred to Wickham to utilize the room for his destruction. Murdock proved a ready tool in the hands of the rogues. They offered him an enormous bribe. And then the three between them evolved the intricate and subtle details of the crime. It was arranged that Murdock was to commit the ghastly deed, and for this purpose he was sent down quietly to Brent disguised as a journeyman the day before Cressley went to the Hall. The men had thought that Cressley would prove an easy prey, but they distrusted me from the first. Their relief was great when they discovered that I could not accompany Cressley to the Hall. And had he spent the first night there, the murder would have been committed; but his nervous terrors inducing him to spend the night at Brent foiled this attempt. Seeing that I was returning to Liverpool, the men now thought that they would use me for their own devices, and made up their minds to decoy me into Murdock's bedroom in order that I might see the wax figure, their object, of course, being that I should be forced to prove an alibi in case Murdock was suspected of the crime. The telegram which reached me at Prince's Hotel on my return from London was sent by one of the ruffians, who was lying in ambush at Brent. When I left Murdock's house, the wife informed Wickham that she thought from my manner I suspected something.