Cloak and dagger
Idiom describing activities of espionage and subversion
Cloak and dagger
"Cloak and dagger" was a fighting style common by the time of the Renaissance involving a knife hidden beneath a cloak. The term later came into use as a metaphor, referring to situations involving intrigue, secrecy, espionage, or mystery.
Read on Wikipedia · Image Alfred Hutton, though original is by Achille Marozzo, Public domain
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