Angela Clifford British Intelligence And Casement Basil Thomson (1861-1939) was Scotland Yard's Assistant Commissioner for Crime in its Criminal Intelligence Department (CID), and of Special Branch (the Political Intelligence Unit) from 1913.  He oversaw the Directorate of Intelligence until his downfall in 1925 in a bizarre incident when he was accused of public indecency with … Continue reading Book Review:  Basil Thomson:  Queer People (1922)