Noun
a spy who works for two mutually antagonistic countries
Source: WordNetThe broad outlines of the Double Cross deception have been known since 1972, when Sir John Masterman, the former chairman of the double agent committee, controversially published his account of the operation in defiance of official secrecy. Ben Macintyre
Actor Brett Dalton is no stranger to portraying memorable villains, after starring on the first four seasons of Agents of S.H.I.E.L.D. as the Hydra double agent Grant Ward. Source: Internet
Because of this, Boone agrees to work as a double agent for the resistance in order to find answers. Source: Internet
Bellegarde was later forced to work during the Second World War for the Russian section of the Abwehr (German military intelligence) in Berlin; there is evidence that he was the very effective British double agent known as "Outcast". Source: Internet
Eventually transmissions purporting to be from one double agent were facilitated by transferring the operation of the set to the main headquarters of MI5. Source: Internet
She said Mr Corbyn was "completely wrong" to call for dialogue after Dawn Sturgess was killed by the Novichok Russia is accused of using to poison former Russian double agent Sergei Skripal. Source: Internet