Angelina Jolie plays Mariane Pearl in Michael Winterbottom’s docudrama about the kidnapping and murder of her husband, the journalist Daniel Pearl. After United 93 and several other pointless exercises in dramatizing the “War on Terror,” you might ask: why bother? We all know what happened to Daniel Pearl–what’s the use in rehashing the story? Is the agony of a pregnant widow-to-be really worth sitting through, even if it’s portrayed by an A-list movie star?

Fortunately, Michael Winterbottom, the prolific and versatile talent behind The Road to Guantanomo, 9 Songs, and Tristram Shandy, supplies a convincing answer. As journalists, the Pearls believed that open dialogue would lead to better understanding. Unlike United 93, which was devoid of context and took liberties with known facts, A Mighty Heart, based on Mariane Pearl’s book, constantly refers to events before and after, to people’s motivations, to reasons, arguments, and possible explanations. The film is dedicated to the Pearl’s son Adam, and like the child that never met his father, we have much to gain from a better understanding of the complexities of what happened, and why.

In films like In This World and The Road to Guantanomo, Michael Winterbottom has perfected a semi-documentary style of filmmaking that relies on real locations, small crews, and serendipity to achieve an immediacy that’s rarely seen on the screen. A Mighty Heart was shot in Pakistan, and the presence of Angelina Jolie, in a wig and sans make-up, rarely distracts from the sense that we’re watching real events. From the teeming streets of Karachi, where Daniel (Dan Futterman) is last seen taking a cab to the guarded house where Mariane anxiously awaits his return, the texture of the film is full of impressionistic details that we couldn’t have gathered from the news. For some reason I can’t quite explain, I was especially touched by the way Daniel holds the microphone of his hands-free headset up to his mouth when he speaks to his wife.

The film narrates, from Mariane’s perspective, the days after Daniel’s disappearance on the way to a dicey interview on January 23, 2002 until his death is confirmed nearly a month later. The Pearl house quickly turns into the headquarters for the uneasy alliance of Pakistani and American agencies who are conducting a hectic search, along with journalists and editors from the Wall Street Journal.

Emails and documents are searched for clues. A whiteboard fills with a tangled web of contacts, fixers, and mysterious sheiks. Pearl’s Indian colleague Asra (Archie Panjabi) is a accused of being an Indian spy. A chef is brought in to keep pregnant Mariane well-fed. Colin Powell announces that negotiating with terrorists is out of the question for the U.S. government. Suspects are taken into custody and interrogated. Mariane gives an interview on CNN but refuses to cry. A Pakistani toddler plays in the yard, his arms hennaed with curly patterns. The movie’s frantic bustle releases into an explosion of grief when Mariane finds out what we already know.