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Community reviews
From TMDb members · 1 total- CinemaSerf7/10
Peter Sellars plays just about everyone in this light-hearted comedy about a tiny European Grand Duchy that comes up with a cunning plan to address it's shocking balance of trade problems. It decides to invade the United States! Armed with little more than halbards, helmets and l…
Full text & links on TMDb in the reviews section below.
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The Mouse That Roared
“They're taking over the country in an invasion of laughs!”
63%
Movie
1h 23m
AI Analysis
The Mouse That Roared (1959) — AI movie analysis
WatchMind AI generated this AI analysis of The Mouse That Roared (1959) — a movie tagged as Comedy with funny moods and steady pacing.
Story & themes: 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. Our models also surface themes such as ai and war from synopsis and genre signals.
Watch context: Best suited for date night and casual background watching. Expect steady storytelling (~83 min).
Community signal: TMDb members rate The Mouse That Roared 63% (137 votes) — solid community ratings for this movie.
AI verdict
Use this AI analysis as a quick read on The Mouse That Roared before you watch — trailer, TMDb reviews, and licensed streaming links on this page help you decide.
Preview on this device: 38% match — Matches your funny mood + comedy. Sign in to save your profile across devices.
Algorithmic AI analysis from genres, synopsis, pacing heuristics, and TMDb community scores — not a generative chatbot. How WatchMind works.
Insights
Audience & engagement
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TMDb audience score
63%
from 137 TMDb votes
Taste match (this device)
38%match
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Matches your funny mood + comedy
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Synopsis
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.
Quick facts
- Type
- Movie
- Status
- Released
- Release date
- 1959-07-17
- Runtime
- 1h 23m
- TMDB rating
- 6.3
- TMDB ID
- 12649
Watch & discovery tips
- Read TMDb member reviews in the reviews section, and audience tips from other WatchMind visitors in Audience notes.
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Frequently asked questions
Where can I watch The Mouse That Roared (1959)?
The Mouse That Roared is available for discovery on WatchMind. You can find official links to rent, buy, or stream from licensed digital stores like Apple TV and Amazon in our "Where to Watch" section.
Is there an official trailer for The Mouse That Roared?
Yes, you can watch the official trailer for The Mouse That Roared directly on this page. We pull the latest video metadata from TMDb and play it via YouTube integration.
What is The Mouse That Roared about?
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 mai... This is the official synopsis available via TMDb community metadata.
Is there an AI analysis for The Mouse That Roared?
Yes. WatchMind publishes an AI analysis on this page — tone, pacing, audience fit, and community scores from TMDb metadata and recommendation models (not a chatbot). Scroll to the AI Analysis section or read the meta description summary.
How long is the movie The Mouse That Roared?
The official runtime for The Mouse That Roared is approximately 83 minutes.
Cast & crew
Names and photos from The Movie Database (TMDb). Follow links on themoviedb.org for full filmographies.
Directors & writers
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)
- M
Mabel Etherington
Ada - Lady in Waiting (uncredited)
- M
Muriel Greenslade
Lady in Waiting (uncredited)
- F
Fred Haggerty
Fenwickian (uncredited)
Audience notes
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Discussion0 notes
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Community reviews
Written by TMDb members — same catalogue as our movie & TV metadata. API terms
Peter Sellars plays just about everyone in this light-hearted comedy about a tiny European Grand Duchy that comes up with a cunning plan to address it's shocking balance of trade problems. It decides to invade the United States! Armed with little more than halbards, helmets and lances, they sail into New work harbour and take the place unopposed. What's going on? They fully expected to be arrested so that would allow Prime Minister "Rupert of Mountjoy" (Sellars) to present the case of his Sovereign "Gloriana" (Sellars) to stop a Californian vineyard from flooding the market with their own cheap plonk version of the only product "Grand Fenwick" has to offer the world - wine! Well, as it happens they arrive just as the local citizenry are taking part in a mandatory nuclear drill and so the place is deserted. The plucky "Tully" (yep you've guessed) alights on a plan to capitalise on their advantage by kidnapping the acclaimed scientist "Kokintz" (David Kossoff) who is developing his mighty "Q-bomb" and getting back home. Once there, the little country finds itself the centre of global attention the likes of which has never been seen; everyone is terrified of this ticking contraption and "Tully" is entirely besotted with the professor's disgruntled daughter "Helen" (Jean Seberg). Two solutions seem equally possible - either "Grand Fenwick" is going to be the wealthiest country in the world - or, well, there just won't be a world! Sellars does well here but it's Kossoff who generates the best laughs as the eccentric boffin and Austin Willis also delivers quite entertainingly, if briefly, as the entirely befuddled US Defense Secretary. It's not exactly laugh out loud, but it's sheer preposterousness takes quite an enjoyable ping at the whole principle of weapons of mass destruction, of the big guy stepping on the little one and is quite good fun.
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