 The Rats got a little taste of their own medicine when John "Bad Jack" Barry, leader of the Cross Keys Club, was fatally shot in a North Side courtroom on February 24, 1910 by Henry Diederichsen.By 1912, Tom Egan headed an organization of 300 to 400 men.That same year, he gave an astounding interview to the St. Louis Post-Dispatch in which he flaunted his power and underworld status.