"The next witness is a locksmith, an acquaintance of Talley's, who will identify the maid's keys as the same bunch brought to him by Talley to be duplicated. He did duplicate them, and handed both sets to Talley, This was about ten days before the murder. "The next witness is another taxi-driver who had no acquaintance with Talley, but is prepared to identify his photograph as that of a man who engaged him outside the Hotel Warrington about midnight on May 27th." "Midnight?" interrupted Judge Stockman. "That was _after_ the murder. Can't you connect this Talley directly with the deed?" "No, sir. He was too clever ... Besides that was not my principal object. I was looking for proof against his employer." "Oh, do you know him too?" Pen nodded. "Go ahead." "This taxi-cab driver could not at first remember the address to which he had driven Talley, but he gave us the locality, and when we drove with him through the streets of that neighborhood he unhesitatingly picked out the house." "How could he do that?" "Well, it was a peculiar looking house; different from any other in the neighborhood, from any other in town probably. It is in Thirty-Ninth street, East of Lexington." "Go on." "He stalled his engine and had to get out of his car to start it. Thus he saw Talley admitted to the house, and had a glimpse of the man who admitted him. Out of a number of photographs handed him he picked out one which he is ready to swear is that of the man who admitted Talley." "He could have got but the briefest of glances." "But it is of a striking-looking man, your Honor." "What next?" Pen said slowly: "Talley was never seen alive after that." "What!" exclaimed Judge Stockman, "you charge a second murder! ... Go on." "For many days we could get no further," Pen said. "Finally one of Talley's friends volunteered to break into that house to look for evidence." "But this is burglary!" "The witness, known as Babe Riordan, is prepared to waive immunity when he goes on the stand. If a charge is laid against him he will stand his trial." "Did he find anything in the house?" "He found the square, cut-glass whiskey bottle on the sideboard. It had been emptied, but we took it to a chemist, our next witness, who is prepared to testify that it contained well defined traces of cyanide." His Honor frowned. "Dubious evidence!" he said. "Even suppose a jury were inclined to believe the chemist, how would they know but that the last witness, a self-confessed burglar, remember, did not put the poison in the bottle himself?" "There is more evidence," said Pen. "It appears that according to the law a druggist may not sell such poisons without a doctor's prescription. A search was conducted through the various drug-stores in the neighborhood, and several prescriptions for cyanide traced back. One was traced to the man who occupies that house on Thirty-Ninth street."