Marshall Bradford

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Doc Kemper

Dr. Matthias (uncredited)

Member of the Tribe

District Attorney (uncredited)

Mailman (uncredited)

Mr. Porter (uncredited)

Dr. Randolph

U.S. Secretary Platt

The Commissioner

Lowell

O'Hanlon, Pinkerton Agent (uncredited)

Academy Awards Attendee (uncredited)

Mr. Hillman

(Unknown)

Coroner

Naturalists' Conference Chairman

Mr. Creely (uncredited)

Malcolm Smith [Ch. 10]

Dr. Pelham

Mutate Council Leader

Man Outside the Club (uncredited)

Ben Williams

Sam Foster

Professor Krantz

Dr. Graffner

Walt Beck

Farmer (uncredited)

Parole Board Member (uncredited)

Headwaiter (uncredited)

Professor Graftner

Chief of Police (uncredited)

Paul Gordon

Senator (uncredited)