There are four systems of Secret Service in Europe, the four leading powers each possessing one. First in systematic efficiency is the German, next comes the Russian, then the French, and English. England has a very efficient service in India and her Asiatic possessions, but has only lately entered the European field. Last but not least comes the International Secret Service Bureau with headquarters in Belgium, a semi-private concern which procures reliable information for anyone who will pay for it. This service is generally entrusted with the procuring of technical details, such as the plans of a new kind of gun or data on a new and minor fortification. Mr. Vance Thompson has also cited special missions like this one that follows. Not often does the chance come to leave the regular channels of espionage and go forth upon a mission out of the ordinary. That chance came a few years ago to the Russian agents in Brussels. In St. Petersburg the chiefs were desirous of knowing the identity and names of a group of revolutionists who had formed a sort of colony in Montreux, Switzerland. A French woman, known sometimes as Theresa Prevost (the last I heard of her she was in prison) was detailed to the mission. Young and clever was Theresa; likewise the man who was ordered to accompany her, posing as a "brother," Charles Prevost. The chief of these Russian fugitives, who were down around the lake of Geneva, brewing their dark plans, was known. He was Goluckoffsky, and he had a son twenty-two years of age--an impressionable Russian son. Hence the young and pretty Theresa. It was decided by her Brussels chiefs that she assume the role of an heiress from Canada. Five thousand francs for preliminary expenses were handed over to her and with Charles, the brother, she descended upon Montreux. If you were there at the time you will recall the social triumph made by the young Canadian heiress. You may even remember that she seemed to be infatuated with the young impressionable son of old Goluckoffsky. The day long they were together. They were going to be married, and Charles Prevost the "brother," stood in the background, chatted amiably with old Goluckoffsky and his friends and smiled. Then as an heiress should, Theresa and her "brother" invited Goluckoffsky, his family and friends, to a pre-nuptial luncheon. No expense was spared, for the wires had moaned with requests sent to Brussels for money. Young Goluckoffsky was delighted with his fiancée. She was insistent that _all_ his friends should be there, all the revolutionaries--although of course his dear Theresa did not know that. How the spelling of their names puzzled her. With gay heart young Goluckoffsky wrote out all their names on a slip of paper so she could send their invitations properly--the names St. Petersburg wanted to know.