month later she was arrested; she gave birth to their son Janek in Pawiak prison. In 1911 Zofia was sentenced to permanent Siberian exile, and she left the child with her father. Dzerzhinsky saw his son for the first time in March 1912 in Warsaw. In attending the welfare of his child, Dzerzhinsky repeatedly exposed himself to the danger of arrest. On one occasion, Dzerzhinsky narrowly escaped an ambush that the police had prepared at the apartment of his father-in-law. Dzerzhinsky continued to direct the Social Democratic Party (SDKPiL), while considering his continued freedom "only a game of the Okhrana". The Okhrana, however, was not playing a game; Dzerzhinsky simply was a master of conspiratorial techniques and was therefore extremely difficult to find. A police file from this time says: "Dzerzhinsky continued to lead the Social Democratic party and at the same time he directed party work in Warsaw, led strikes, published appeals to workers, and traveled on party matters to Łódź and Kraków." The police were unable to arrest Dzerzhinsky until the end of 1912, when they found the apartment where he lived in the name of Władysław Ptasiński. Revolution Dzerzhinsky spent the next four-and-a-half years in tsarist prisons, first at the notorious Tenth Pavilion of the Warsaw Citadel. When World War I began in 1914, all political prisoners were relocated from Warsaw into Russia itself. Dzerzhinsky was taken to Oryol Prison. He was very concerned about the fate of his wife and son, with whom he did not have any communication. Moreover, Dzerzhinsky was beaten frequently by the Russian prison guards, which caused permanent disfigurement of his jaw and mouth. In 1916, Dzerzhinsky was moved to the Moscow Butyrka prison, where he was soon hospitalized because the chains that he was forced to wear had caused severe cramps in his legs. Despite the prospects of amputation, Dzerzhinsky recovered and was put to labor sewing military uniforms. Dzerzhinsky was freed from Butyrka after the February Revolution of 1917. Soon after his release, Dzerzhinsky's goal was to organize Polish refugees in Russia and then go back to Poland and fight for the revolution there, writing to his wife that "together with these masses we will return to Poland after the war and become one whole with the SDKPiL." He remained in Moscow where he joined the Bolshevik party, writing to his comrades that "the Bolshevik party organization is the only