A fascinating story about early Soviet espionage:

"The Trust," Rocca explained, lighting up a professorial pipe, was a clandestine organization that operated in the Soviet Union from 1921 to 1928. Its official title was the Monarchist Union of Central Russia. Supposedly, its purpose was to overthrow the Communist regime in Russia and restoring the Czarist Monarchy. Since its headquarters, and cover, was a municipal credit association in downtown Moscow, it became known among anti-communist conspirators outside of Russia as "The Trust."