stay-behind

Noun

 * 1) One who remains when expected to leave or after others have left.
 * 2)  An agent who lives in a foreign country, and can be activated in certain circumstances.
 * , Sam Halpern, Quoted in 2000, James Srodes, Allen Dulles: Master of Spies, page 545,
 * Bobby Kennedy believed the Mafia had lots of interests in and people in Cuba; he was absolutely convinced that they had left stay-behinds in Cuba and all they had to do was tap into those stay-behinds.
 * 1)  An agent who lives in a foreign country, and can be activated in certain circumstances.
 * , Sam Halpern, Quoted in 2000, James Srodes, Allen Dulles: Master of Spies, page 545,
 * Bobby Kennedy believed the Mafia had lots of interests in and people in Cuba; he was absolutely convinced that they had left stay-behinds in Cuba and all they had to do was tap into those stay-behinds.