Spymaster
A spymaster is the person that leads a spy ring or a secret service (such as an intelligence agency). Historical spymasters

See also
 List of American spies
 List of British spies
 List of German spies
 List of fictional spymasters

References 
 https://general-history.com/famous-spy-masters-through-the-ages/

Notes

Spies by role
Spymasters