Main Cast of Insomnia (2002)
The 2002 thriller Insomnia stars Al Pacino as LAPD detective Will Dormer, Robin Williams as suspect Walter Finch, and Hilary Swank as local detective Ellie Burr. The ensemble supports a tense cat-and-mouse story set in Alaska.
Key Supporting Performances
Supporting roles include Maura Tierney as Rachel Clement, Paul Dooley as Chief of Police Hap Eckhart, and Callum Keith Rennie as crime scene technician Randy Stetz. These actors help define the moral complexity and small-town atmosphere of the film.
Why the Cast Matters for the Story
The cast drives the film’s suspense, with Pacino’s weary detective and Williams’s calm manipulator creating a psychological duel. Swank’s grounded performance anchors the procedural elements, making the investigation and its consequences feel immediate and credible.
