They were accused of 'spying' for a foreign government.
a 'spy' camera/plane [=a camera/plane used for spying]
a 'spy' novel/thriller [=a novel/thriller about spies]
(..) I was a brilliant liar. Better at amputations, I'm afraid. Quite a pretty spot. Will we be here long? I couldn't really discuss troop movements with you. I'm not a spy. Of course a spy would deny being a spy. You're right. You've found me out. I'm writing a letter to the Lannisters. "The Young Wolf (..)2012 TvShow: Game of Thrones Title: The Old Gods and the New Season: 2 Episode 6