Sun Tzü, The Art of War
Quintus Sertorius (biography by) Plutarch
vigilantes frumentarri agents in rebus
curiosi
Basil Pantherios in Digenes Akritas
Machiavelli, The Prince; Discourses; The Art of War
Oprichniki
polizeistaat (police state)
“secret” police (privy) Sir Francis Walsingham St. Bartholomew’s Day Massacre Christopher Marlowe – Anthony Munday Edmund Campion
Babington Plot
Gilbert Gifford Babington Postscript Royal Mail “Secret Man” Isaac Dorislaus “Secret Office” & “Private Office” Deciphering Department William Wickham Luddite Movement Habeas Corpus Home Office Committee of Secrecy Spa Field Riots
Spies and Bloodites
Depot of Military Knowledge Crimean War Attorney General John A. Macdonald — Canada West Frontier Police
Special Branch, London Metropolitan Police