Skip to content
What's After the Movie?
Comedy

The Mouse That Roared (1959): Cast & Plot

The Mouse That Roared (1959) movie poster

The Mouse That Roared is a 1959 comedy directed by Jack Arnold, starring Peter Sellers as Grand Duchess Gloriana XII / Prime Minister Count Rupert Mountjoy / Tully Bascombe, Lionel Murton and John Tatum. It runs 1 hour 23 minutes.

Loading streaming availability…
The Mouse That Roared (1959) movie poster
Released
Runtime
1h 23m (83 min)
Director
Jack Arnold
Genre
Comedy
Original language
English
After the credits
No No extra scene
The story

What Is The Mouse That Roared About?

The premise of The Mouse That Roared without spoilers. The whole story is in the plot summary further down.

A satirical comedy where the tiny European duchy of Grand Fenwick, facing economic collapse, hatches a scheme to declare war on the United States, deliberately lose, and then receive foreign aid. Its medieval‑styled army in chain mail and bows lands in New York during a nuclear drill, finds the streets cleared, and sparks a series of slapstick mishaps.

The Mouse That Roared Themes & Keywords

· 50 tags
  • satire
  • new york city
  • scientist
  • cold war
  • prisoner of war
  • fictitious country
  • prime minister
  • financial crisis
  • atomic bomb
  • mouse
  • ship
  • queen
+38 more
  • voice over narration
  • altered version of studio logo
  • actor playing multiple roles
  • based on novel
  • surprise ending
  • wine
  • invasion
  • archery
  • abduction
  • sea voyage
  • animated opening credits
  • declaration of war
  • man wears eyeglasses
  • leader of the opposition
  • father daughter relationship
  • fish out of water
  • deserted city
  • subtitled scene
  • general
  • ocean liner
  • wax museum
  • bus
  • stepping in chewing gum
  • longbow
  • attempted seduction
  • bow and arrow
  • seasickness
  • rumor
  • bus stop
  • storm
  • hazmat suit
  • mistaken identity
  • marseilles france
  • kiss
  • dancing
  • horse
  • newspaper headline
  • truck
Loading streaming availability…
Cast & crew

The Mouse That Roared Cast & Characters

Peter Sellers leads the cast as Grand Duchess Gloriana XII / Prime Minister Count Rupert Mountjoy / Tully Bascombe, with Lionel Murton as American General at the Pentagon (uncredited) and John Tatum as American Admiral (uncredited). Directed by Jack Arnold; 29 actors are credited in all.

Also Starring in The Mouse That Roared

· 25 more
Show all 29 cast members
From the director

More from Jack Arnold

More films directed by Jack Arnold, best-rated first: The Incredible Shrinking Man, Creature from the Black Lagoon, Buck Rogers in the 25th Century and Marilyn: The Untold Story.

Full filmography
Plot

The Mouse That Roared Plot Summary

What happens in The Mouse That Roared from start to finish, spoilers included, with a timeline of 13 key events. The opening is below; the full summary is a 5-minute read.

Spoilers ahead

The tiny, cash-strapped Duchy of Grand Fenwick faces a harsh new reality when an American company releases a cheaper imitation of its single export, the revered Pinot Grand Fenwick wine. In response, the wily Prime Minister Count Rupert Mountjoy plots a mischievous and remarkably simple scheme: declare war on the United States, then surrender and rely on the generous postwar aid that often follows a victory. The Duchess Gloriana XII, a patient but practical monarch, tilts toward the plan, while the mild-mannered game warden Tully Bascombe becomes the unlikely Field Marshal who will lead a twenty-man unit into the world’s most powerful theater. The unit’s commander is the unassuming Will Buckley, a sergeant who brings steady nerves to a mission that sounds more like a prank than a march.

Full summary

The whole story of The Mouse That Roared, scene by scene

Read the full summary
Videos

The Mouse That Roared Trailers & Videos

The trailer of The Mouse That Roared.

The Mouse that Roared Trailer
Quiz

How Well Do You Know The Mouse That Roared?

10 questions about the story, each with a hint if you get stuck. Pick an answer to see whether you were right.

Question 1 of 10

  1. Question 1: not answered
  2. Question 2: not answered
  3. Question 3: not answered
  4. Question 4: not answered
  5. Question 5: not answered
  6. Question 6: not answered
  7. Question 7: not answered
  8. Question 8: not answered
  9. Question 9: not answered
  10. Question 10: not answered

Who is the Prime Minister who devises the scheme to declare war on the United States?

Cars

Cars in The Mouse That Roared

14 cars on screen, including the 1941 Dodge WC 27 and the 1913 Sunbeam 12/16 hp.

All 14 cars
  • 1941 Dodge WC 27 in The Mouse That Roared 1941 Dodge WC 27 Important role
  • 1913 Sunbeam 12/16 hp in The Mouse That Roared 1913 Sunbeam 12/16 hp Important role
  • 1942 Willys MB 'Jeep' in The Mouse That Roared 1942 Willys MB 'Jeep' Important role
  • Bedford OB in The Mouse That Roared Bedford OB Minor role

Seen The Mouse That Roared?

FAQ

The Mouse That Roared FAQ: Cast, Runtime & Release Date

Runtime, release date, director, cast and post-credit scenes of The Mouse That Roared, each answered in a sentence.

How long is The Mouse That Roared?

The Mouse That Roared runs 1 hour 23 minutes (83 minutes).

When was The Mouse That Roared released?

The Mouse That Roared was released on July 17, 1959.

Who directed The Mouse That Roared?

The Mouse That Roared was directed by Jack Arnold.

More films by Jack Arnold

Who is in the cast of The Mouse That Roared?

The Mouse That Roared stars Peter Sellers as Grand Duchess Gloriana XII / Prime Minister Count Rupert Mountjoy / Tully Bascombe, Lionel Murton as American General at the Pentagon (uncredited) and John Tatum as American Admiral (uncredited), among 29 credited actors.

Does The Mouse That Roared have a post-credit scene?

No. The Mouse That Roared has no extra scene during or after the credits.

Coming soon to your phone

The Plot Explained Movie Summary App

From blockbusters to hidden gems: plot summaries, endings explained and timelines on your phone. Save your favorites and never miss a twist again.

Be the first to know when it launches. Your email stays private, always. Learn more about the app