菲利普·塞默·霍夫曼
Philip Seymour Hoffman
饰：卡波特 Truman Capote
凯瑟琳·基纳
Catherine Keener
饰：Nelle Harper Lee
小克利夫顿·克林斯
Clifton Collins Jr.
饰：佩里 Perry Smith
鲍勃·巴拉班
Robert Elmer Balaban
饰：William Shawn
克里斯·库珀
Chris Cooper
饰：Alvin Dewey
布鲁斯·格林伍德
Bruce Greenwood
饰：Jack Dunphy
艾米·莱安
Amy Ryan
饰：Marie Dewey
米歇尔·哈里逊
Michelle Harrison
饰：Babe Paley (uncredited)
马克·佩利格里诺
Mark Pellegrino
饰：Dick Hickock
Allie Mickelson
Allie Mickelson
饰：Laura Kinney
马绍尔·贝尔
Marshall Bell
饰：Warden Marshall Krutch
Araby Lockhart
Araby Lockhart
饰：Dorothy Sanderson
Robert Huculak
Robert Huculak
饰：NY Reporter
R.D. Reid
R.D. Reid
饰：Roy Church
罗布·麦克劳克林
Rob McLaughlin
饰：Harold Nye (as Robert McLaughlin)
Harry Nelken
Harry Nelken
饰：Sheriff Walter Sanderson
克尔·休伊特
Kerr Hewitt
饰：Danny Burke
约翰·麦克拉伦
John Maclaren
饰：Judge Roland Tate
Jeremy Dangerfield
Jeremy Dangerfield
饰：Jury Foreman
科维西·阿梅扬
Kwesi Ameyaw
饰：Porter
Jim Shepard
Jim Shepard
饰：Chaplain
John B. Destry
John B. Destry
饰：Pete Holt (as John Destry)
C.恩斯特·哈斯
C. Ernst Harth
饰：Lowell Lee Andrews
亚当·季莫尔
Adam Kimmel
饰：Richard Avedon
Olie Alto
Olie Alto
饰：Franklin Weeks
Craig Archibald
Craig Archibald
饰：Christopher
Norman Armour
Norman Armour
饰：Literary Enthusiast
Ainsley Balcewich
Ainsley Balcewich
饰：Girl
Jonathan Barrett
Jonathan Barrett
饰：Journalist
查德·布鲁斯
Chad Bruce
饰：Jack's Party Guest (uncredited)
迈克尔·J·伯格
Michael J. Burg
饰：Williams (as Michael J. Berg)
纳扎利·德姆克维奇
Nazariy Demkowicz
饰：Paul Dewey
詹姆斯·德汉姆
James Durham
饰：Young Prison Guard
Mia Faircloth
Mia Faircloth
饰：Girl
Frank Filbert
Frank Filbert
饰：Prison Guard
迈克尔·格雷耶斯基
Michal Grajewski
饰：Young Assistant (uncredited)
埃内斯托·格里菲思
Ernesto Griffith
饰：Porter (uncredited)
James Janssens
James Janssens
饰：Man in Courtroom (uncredited)
Boyd Johnson
Boyd Johnson
饰：ND Prison Guard
Tiffany Knight
Tiffany Knight
饰：Gloria Guiness (uncredited)
Ken Krotowich
Ken Krotowich
饰：Courthouse Guard
Jason Love
Jason Love
饰：Row Guard
Don Malboeuf
Don Malboeuf
饰：ND Prison Guard
Manfred Maretzki
Manfred Maretzki
饰：Herb Clutter
贝斯·梅耶
Bess Meyer
饰：Linda Murchak
Wayne Nicklas
Wayne Nicklas
饰：Row Guard
David Rakoff
饰：Ben Baron
Christopher Read
Christopher Read
饰：Journalist
凯特·希德尔
Kate Shindle
饰：Rose
米丽亚姆·史密斯
Miriam Smith
饰：Bonnie Clutter
凯尔西∙斯蒂芬森
Kelci Stephenson
饰：Nancy Clutter
Edward Sutton
Edward Sutton
饰：Old Man
Avery Tiplady
饰：Alvin Dewey Jr.
John Warkentin
John Warkentin
饰：Warren Hotel Desk Clerk
威尔·沃伊托维希
Will Woytowich
饰：Cruiser
乔恩·特德·温
Jon Ted Wynne
饰：Journalist
科里·卡西迪
Cory Cassidy
饰：Court Marshall (uncredited)
Edgar Governo
饰：New York Literatus (uncredited)
Roy MacEachern
饰：Kansas Citizen (uncredited)
Bob Washington
Bob Washington
饰：Extra (uncredited)
Bronwen Coleman
Bronwen Coleman
饰：Barbara
大卫·威尔逊·巴恩斯
David Wilson Barnes
饰：Grayson
Andrew Farago
Andrew Farago
饰：Car Rental Agent
Philip Lockwood
饰：Kenyon Clutter
Marina Stephenseon Kerr
Marina Stephenseon Kerr
饰：Operator
约翰·布朗
John Brown
饰：Kansas State Patrol (uncredited)
David Ferrall
David Ferrall
饰：Party Date (uncredited)
Evelyn Hart
饰：Woman at Party (uncredited)
Warren Louis Wiltshire
Warren Louis Wiltshire
饰：Limo Driver (uncredited)
Ryan DeLong
Ryan DeLong
饰：Young School Teacher (uncredited)
Janett Ohoven
Janett Ohoven
饰：Sophie Clutter (uncredited)
Tiffany Lyndall-Knight
饰： Gloria Guiness
克里斯·库柏
Chris Cooper
饰：Alvin Dewey
亚当·基梅尔
Adam Kimmel
饰：Richard Avedon
玛丽娜·斯蒂芬森·科尔
Marina Stephenson Kerr
饰：Operator,
约翰·德斯崔
John Destry
饰：Pete Holt