The Last Witness follows the story of Stephen Underwood, a journalist who gets wind of a shocking truth about a massacre that took place in Katyn, Poland during WWII. He sets out to investigate the matter and begins to uncover information that leads him closer to the truth behind the mysterious disappearance of 22,000 Polish officers, an event that had remained a secret for decades.
As Underwood delves deeper, he finds himself in the crosshairs of powerful organizations who will do anything to keep the truth hidden. With an impending threat looming, Underwood must race against time to uncover the truth and bring justice to the families affected by the tragedy.
The film features an all-star cast of Alex Pettyfer as the lead character Stephen Underwood, Michael Gambon as the editor of the newspaper he works for, and Talulah Riley as Underwood's love interest. The gritty and suspenseful drama highlights the power of the press and the courage of those who stand up for what is right, even in the face of danger.