James Spader
— Daniel Ellsberg
Claire Forlani
— Patricia Marx
Paul Giamatti
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Alan Arkin
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Kenneth Welsh
— John McNaughon
Maria del Mar
— Carol Ellsberg
Aaron Ashmore
— Randy Kehler
Jonas Chernick
— Neil Sheehan
Martin Roach
— Sgt. Watson
Bruce Gooch
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Sean McCann
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James Downing
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Richard Fitzpatrick
— John Ehrlichman
Amy Price-Francis
— Jan Butler
George R. Robertson
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Robert Seeliger
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Roland Rothchild
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Damir Andrei
— Leonard Boudin
Carl Marotte
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David Fox
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Neville Edwards
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Matt Cooke
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Jonathan Higgins
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Owen Rilan
— Corcoran
Sharon McFarlane
— Charlotte
Daneen Boone
— Blonde at Russo's
Judah Katz
— District Attorney
Mark Benesh
— Leonard Compson III
Troy Blendell
— Marine Radio Man
Amy Troung
— Vietnamese Woman