

MovieComedy
The Mouse That Roared
They're taking over the country in an invasion of laughs!
6.4(150)19591h 23m
The Duchy of Grand Fenwick decides that the only way to get out of their economic woes is to declare war on the United States, lose and accept foreign aid. They send an invasion force (in chain mail, armed with bows and arrows) to New York and they arrive during a nuclear drill that has cleared the streets.
- Director
- Jack Arnold
- Writers
- Roger MacDougall,Stanley Mann
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Cast

Peter Sellers
Grand Duchess Gloriana XII / Prime Minister Count Rupert Mountjoy / Tully Bascombe

Jean Seberg
Helen Kokintz

William Hartnell
Will Buckley

David Kossoff
Professor Alfred Kokintz

Leo McKern
Benter

MacDonald Parke
General Snippet

Austin Willis
United States Secretary of Defense

Timothy Bateson
Roger

Monte Landis
Cobbley

Alan Gifford
Air Raid Warden

Colin Gordon
BBC Announcer

Harold Kasket
Pedro

Guy Deghy
Soviet Ambassador (uncredited)

Eve Eden
Spectator (uncredited)

Bill Edwards
Army Captain (uncredited)
Mabel Etherington
Ada - Lady in Waiting (uncredited)
Muriel Greenslade
Lady in Waiting (uncredited)

Fred Haggerty
Fenwickian (uncredited)
Juba Kennerley
Maybury (uncredited)
George Margo
O'Hara (uncredited)

Lionel Murton
American General at the Pentagon (uncredited)

Bill Nagy
U.S. Policeman (uncredited)

Robert O'Neil
Reporter (uncredited)

Pat Ryan
American General (uncredited)
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Crew
Directing
- Jack ArnoldDirector
- Philip ShipwayAssistant Director
- Pamela DaviesContinuity
Writing
- Leonard WibberleyNovel
- Roger MacDougallScreenplay
- Stanley MannScreenplay
Production
- Walter ShensonProducer
- Jon PeningtonAssociate Producer
- Leon BeckerProduction Supervisor
- James H. WareProduction Manager
Camera
- John WilcoxDirector of Photography
- Austin DempsterCamera Operator
Editing
- Raymond PoultonEditor
Sound
- Edwin AstleyOriginal Music Composer
- Red LawSound
- Richard MardenSound Editor
- George StephensonSound
- Edwin AstleyConductor
Art
- Maurice BinderTitle Designer
- Geoffrey DrakeArt Direction
Costume & Make-Up
- Anthony MendlesonCostume Designer
- Joyce JamesHairdresser
- Stuart FreebornMakeup Artist
Visual Effects
- Gerald EndlerMechanical Designer
Crew
- John WinboltSecond Unit Cinematographer