Dr. Margo Green

Penelope Ann Miller

Lt. Vincent D'Agosta

Tom Sizemore

Dr. Ann Cuthbert

Linda Hunt

Dr. Albert Frock

James Whitmore

Detective Hollingsworth

Clayton Rohner

Dr. Greg Lee

Chi Muoi Lo

Tom Parkinson

Thomas Ryan

Mayor Robert Owen

Robert Lesser

Mayor's Wife

Diane Robin

John Whitney

Lewis van Bergen

Mrs. Harriet Blaisedale

Constance Towers

Mr. George Blaisedale

Francis X. McCarthy

Dr. Matilda Zwiezic

Audra Lindley

McNally

John Kapelos

Bailey

Tico Wells

Bradley

Mike Bacarella

Martini

Gene Davis

Jonathan

Ronald Joshua Scott

Guard Wootton

John DiSanti

Eugene

David Graubart

Guard Johnson

David Proval

Guard Frederick Ford

Jophery C. Brown

Dr. Gross

Ron Cummins

Spota

Don Harvey

Captain Martin

Ned Schmidtke

Eugene

Dave Graubart

Teacher

LaDonna Tittle

Officer Katherine

Katherine Mitchell

Captain Borne

Santos Morales

Museum Worker

Eddie Jemison

Sergeant

Ralph Seymour

Crazy Man

Matthew Furlin

Perri Masai

Lyn Alicia Henderson

Evans

Thomas Carroll

Donna

Mandy Ingber

Kothoga

Brian Steele

Donna

Amanda Ingber

Chanting Woman (as Montrose Hughes)

Montrose Hagins

Charlie

David Hollander

Police Officer

Kurt Naebig

Coroner's Assistant

Ken Magee

Dr. Brown

Aaron Lustig

Grad Student

Kent George

Parkinson

Tommy Ryan

SWAT Team Guy

Mark Lake

Kothoga

Vincent Hammond

Kothoga (voice)

Gary A. Hecker

Helicopter Pilot

Craig Hosking

Helicopter Pilot

Dana Kristen Vahle

Policeman (uncredited)

Dick Warlock