Reparto principal

Instinto básico reparto completo

Un antiguo cantante de rock ha sido brutalmente asesinado. La última vez que se le vio estaba acompañado por su novia. En la comisaría, en el departamento de Asuntos Internos, Nick Curran recibe el encargo de vigilar a Catherine Tromell, la supuesta novia asesina.

Reparto principal

Michael Douglas

Detective Nick Curran

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Sharon Stone

Catherine Tramell

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George Dzundza

Gus

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Jeanne Tripplehorn

Dr. Beth Garner

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Denis Arndt

Lieutenant Walker

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Leilani Sarelle

Roxy

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Bruce A. Young

Andrews

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Chelcie Ross

Captain Talcott

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Dorothy Malone

Hazel Dobkins

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Wayne Knight

John Correli

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Daniel von Bargen

Lieutenant Nilsen

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Stephen Tobolowsky

Dr. Lamott

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Benjamin Mouton

Harrigan

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Jack McGee

Sheriff

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Stephen Rowe

Internal Affairs Investigator

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Mitch Pileggi

Internal Affairs Investigator

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Mary Pat Gleason

Juvenile Officer

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Freda Foh Shen

Berkeley Registrar

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William Duff-Griffin

Dr. Myron

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James Rebhorn

Dr. McElwaine

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David Wells

Polygraph Examiner

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Bradford English

Campus Policeman

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Mary Ann Rodgers

Nurse

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Adilah Barnes

Nurse

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Irene Olga López

Maid

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Juanita Jennings

Receptionist

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Craig C. Lewis

Bartender | Police Bar

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Michael David Lally

Detective

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Peter Appel

Detective

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Michael Halton

Bartender | Country Western Bar

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Keith McDaniel

Featured Dancer

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Eric Poppick

Coroner's Guy

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Ron Cacas

Policeman

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Kayla Blake

Roxy's Friend

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Ken Liebenson

Doo Wah Riders

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Lindy Rasmusson

Doo Wah Riders

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Byron Berline

Doo Wah Riders

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Eddie Dunbar

Doo Wah Riders

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Tom McKibbin

Doo Wah Riders

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Julie Bond

Hand Puppet Model

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Anne Lockhart

Disco Patron (uncredited)

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Patricia Anne Isgate-Hayward

Classmate (uncredited)

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Pui Fan Lee

Mrs. Rollins (uncredited)

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Andy Rolfes

Police Officer (uncredited)

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Bob Sallese

Internal Affairs Detective (uncredited

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Damon Stout

Disco Patron (uncredited)

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Vanessa Hudgens

Tiffany

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