Collocations for spy - noun

enemy, foreign, government, industrial
suspected
top
Britain's top spy

British, Soviet, etc.

network

act as, be, work as
He denied acting as an enemy spy.

recruit (sb as)

infiltrate
Soviet spies who had infiltrated the American government

film (esp. BrE), movie (esp. AmE), novel, story, thriller
camera, plane, satellite
network, ring
Counter-intelligence officers uncovered a spy ring involving twenty agents.

agency (esp. AmE)
the director of a top American spy agency

chief

spy for
He was a spy for the government.