Book excerpt: Drawing on classical sociological writing on secrecy by Simmel, Merton and Shils Secrecy and Science draws on recently declassified documents to investigate significant episodes in the history of biological and chemical warfare. At the same time, it draws on more contemporary perspectives in science and technology studies that understand knowledge and social order as co-produced within heterogeneous networks of 'things and people' in order to develop a theoretical set of arguments about how the relationship between secrecy and science might be understood.