This was signed “G. D.” and was marked “in haste.” The first move of Chief Wilkie was to make sure that the man was guarded. His investigations proved that there was no possibility of “G. D.” escaping from Washington. Then he got into communication with the Secretary of War and the Secretary of the Navy and informed them of the information that had been intercepted. The immediate effect of this was to tighten the discipline in each of these Departments. All unauthorized persons were to be kept out of the building and a strict watch was kept upon all of the employees. The inference was that some one in the Navy Department had been co-operating with “G. D.” and that this person had supplied him with information upon his return from Canada. The question of taking the spy into custody was next considered. It was decided that this should be done at once. As it was a matter that technically came under the military power of the Government, Chief Wilkie made application to the War Department, and as a result of this Captain Saye of the Eighth Artillery, with a corporal and one other man, was ordered to report to him for duty. Thus fortified, the head of the Secret Service Division started for the apartment on E Street. The little procession going from the Treasury Department attracted very little attention, and the passers-by did not realize what was going on. But all of those in the little group understood the importance of their mission so far as the Government was concerned. It was eleven o’clock at night and when they arrived at the house occupied by “G. D.” they discovered a light burning in the second-story room. It was evident that the spy was continuing his habits of industry. The Chief gained admission without any difficulty, and, followed by the others, made for the upper room. The supposed Alexander Cree was sitting at his desk engaged in writing. He seemed surprised at the intrusion, but received his callers politely. Evidently his calling had accustomed him to visits at all hours of the day and night. “Well, gentlemen,” he said, “what can I do for you?” “To start with,” said the spokesman of the invading party, “we would like to have the letter you are writing and all of the documents you have in that desk.” For the first time he showed surprise. He smiled faintly and then rejoined: “Perhaps you will let me know the cause of this unexpected visit.” “Certainly. We have come to arrest you as a spy!” Cree turned very white. He steadied himself by resting against the side of a bureau. It was some moments before he was able to speak, and then moistening his lips with the tip of his tongue he murmured: “Who are you, and what authority have you got for talking in this manner?” “It’s no use, young man,” was the quick retort, “we have the goods on you, and if you have any doubt about it we can show you the letter which you mailed to Montreal and which has been intercepted by the United States Government.”