The Sentinel 2006

Pete Garrison, portrayed by Michael Douglas, is an esteemed Secret Service agent who finds himself at the center of a political tempest. He serves as a personal bodyguard to the First Lady of the United States, Sarah Ballentine, played by Kim Basinger, but their relationship is far more complicated than mere professionalism, as the two are embroiled in a clandestine affair. Garrison, a seasoned veteran of the agency, has an illustrious past that includes heroically saving President Ronald Reagan’s life during a notorious assassination attempt. Yet, his world takes a dark turn when his colleague and close friend, Charlie Merriweather, is brutally murdered outside his home.

As whispers circulate about a potential assassination plot against the President, Garrison learns from a confidential source that the killing of Merriweather may be linked to a traitor within their ranks—a mole who has compromised the security of the President’s detail. To tackle this grave situation, the Secret Service’s Protective Intelligence Division, now headed by Garrison’s former protégé and estranged friend, David Breckinridge—depicted by Kiefer Sutherland—is brought in to conduct a thorough investigation. Alongside Breckinridge is rookie agent Jill Marin, portrayed by Eva Longoria Parker, who contributes her youthful perspective to an already high-stakes scenario.

The investigation ramps up in intensity, beginning with polygraphic examinations of every agent involved. However, unbeknownst to Garrison, the mole is tracking his every move and is aware of his affair with the First Lady. Additionally, this treacherous insider attempts to blackmail him, luring him to a café recognized for its connections to Colombian gangs. Adding to his woes, Garrison fails the polygraph by lying about the affair, effectively casting him as the prime suspect in relation to the leaks that could endanger the President.

The tension escalates further when Breckinridge confronts Garrison at his residence, igniting a heated exchange that brings to light the personal turmoil between them: Garrison is accused of having had an affair with Breckinridge’s wife, a claim he staunchly denies. Seizing the opportunity to clear his name, Garrison embarks on an independent investigation, trying to unearth the truth about the assassination conspiracy. He desperately attempts to reach out to the informant who initially shared this troubling intel, only to discover that the individual has already been murdered.

During a chance encounter, Garrison reconnects with Breckinridge but is left disheartened by his former friend’s refusal to offer him aid or protection, despite Breckinridge’s implied orders for a “shoot to kill” policy against him. Utilizing his network of loyal agents and family allies, Garrison uncovers an assassin’s hideout and learns of a chilling plan to ambush the President during the upcoming G8 summit in Toronto. As fate would have it, he informs Marin of this critical information, only for it to vanish before she can procure any evidence.

In an explosive revelation, the First Lady confides in Breckinridge about her affair with Garrison, leading him to reconsider his previous judgments. He ultimately tracks down Garrison in Toronto and expresses his belief in Garrison’s innocence. Together, they unveil the true identities of both the assassins and the mole—senior agent William Montrose, portrayed by Martin Donovan, who eluded a polygraph examination entirely. Montrose had been overseeing security for the G8 summit and is coerced by the assassins, led by a merciless figure known as the Handler, who threatens Montrose’s family to ensure compliance.

With time running out, Montrose is faced with horrific choices, and they culminate in a series of high-octane confrontations as Garrison and Breckinridge race against the clock to secure the President’s safety. The action reaches a frenetic pitch during the summit as agents, including the valiant Montrose—who ultimately sacrifices himself—face off against the assassins masquerading as law enforcement officers. In a heart-stopping climax, Garrison confronts the Handler, eventually neutralizing the immediate threat and rescuing the First Lady.

Yet, amidst the chaos and heroism, Garrison is forced to confront the fallout of his personal life, leading to his premature retirement from the Secret Service due to the public revelation of his affair. As he departs the White House, the emotional impact of his choices weighs heavily on him, particularly as he catches a final glimpse of the First Lady watching him from her window, sadness etched across her face.