What would you do if a total stranger proved to you that your three closest friends are enemy agents” For investigative TV host John Tanner the news comes on the eve of a reunion at his home where the traitors are all placed under surveillance by a mysterious CIA operative. But as the get-together turns deadly, are Tanner  and his family being set up for the most shocking betrayal of all? Also starring screen veteran Burt Lancaster and Craig T. Nelson.