The Sentinel is a 2006 crime thriller film[2] directed by Clark Johnson about a veteran United States Secret Service bodyguard who is suspected as a traitor after an attempted assassination of the president reveals that someone within the Service is providing information to the assassins.
The film stars Michael Douglas as the veteran agent, Kiefer Sutherland as his protégé, Eva Longoria as a rookie Secret Service agent, and Kim Basinger in the role of the First Lady. It is based on the novel of the same name by former Secret Service Agent Gerald Petievich, the author of the book To Live and Die in L.A., also made into a film. It was filmed in Washington, D.C. and in the Canadian cities of Toronto and Kleinburg, Ontario.