Allan Pinkerton affiliated with the notorious Banditti of the Prairie. After observing their movements for some time he informed the local sheriff, who arrested them. This later led to Pinkerton being appointed, in 1849, as the first police detective in Chicago, Cook County, Illinois. In 1850, he partnered with Chicago attorney Edward Rucker in forming the North-Western Police Agency, which later became Pinkerton & Co, and finally Pinkerton National Detective Agency, still in existence today as Pinkerton Consulting and Investigations, a subsidiary of Securitas AB. Pinkerton's business insignia was a wide open eye with the caption "We never sleep." As the US
Dirk Gently's Holistic Detective Agency BWV 6 (also an organ chorale BWV 649). Adams stated that this was his personal "absolutely perfect" piece of music, and that he listened to it "over and over; drove my wife completely insane" while writing "Dirk Gently's Holistic Detective Agency". Richard MacDuff attends the Coleridge dinner at his old college St Cedd's, where he witnesses his former tutor, Professor Urban "Reg" Chronotis, perform an inexplicable magic trick in which he makes a salt cellar disappear, then reveals it by smashing a centuries-old clay pot that a young girl brought to the dinner. The dinner concludes with a reading of