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Plot summary

The Great Diamond Robbery (1954) Plot Summary & Timeline

The Great Diamond Robbery (1954) movie poster

The Great Diamond Robbery is a 1954 crime and comedy film directed by Robert Z. Leonard and Robert Stevenson, running 1 hour 10 minutes. This page retells the whole story in 215 words (about 1 minute to read) and covers 12 key events in order, 5 characters, where and when it is set and 4 themes. Looking for the cast, ratings and where to stream it? See the movie page for The Great Diamond Robbery.

to read the plot summary
1 min
key events in the timeline
12
characters profiled
5
themes explained
4
The Great Diamond Robbery (1954) movie poster
Released
Runtime
1h 10m
Genres
Crime, Comedy
Original language
English
No spoilers

What Is The Great Diamond Robbery About?

The premise of The Great Diamond Robbery in 257 words, with nothing given away. The full story follows below.

In the glittering heart of New York City’s diamond district, Ambrose C. Park has built a quiet life around his work as an assistant to a diamond cutter, his steady hands and earnest demeanor belying a deeper loneliness. Abandoned as an infant on a park bench, Ambrose marks each birthday with a humble newspaper advertisement, a ritual of hope that speaks to his enduring belief that somewhere, somehow, family might still find him. His gentle nature and unwavering optimism make him both endearing and curiously vulnerable in a world where appearances can be deceiving.

The city around him hums with ambition and artifice, a place where identities are crafted as carefully as the gems traded in its back rooms. When a shyster lawyer named Remlick becomes interested in Ambrose’s solitary existence, a curious chain of events begins to unfold. Before long, the young man finds himself presented with something he has yearned for across decades — a family, complete with parents and a sister who claim kinship and offer the warmth of belonging he has always craved.

Comedy and heartfelt longing intertwine as Ambrose navigates this unexpected turn, balancing professional aspirations with the overwhelming joy of connection. A priceless uncut diamond rests at the center of his professional world, awaiting the skilled hands that might transform it. Yet the relationships forming around him carry mysteries of their own, and somewhere in the glow of newfound family lies a question that Ambrose might not think to ask — whether every reunion is the homecoming it appears to be.

Full plot

What Happens in The Great Diamond Robbery?

The complete story of The Great Diamond Robbery, from the first scene to the last, in 215 words (about 1 minute). Spoilers throughout. Names in the text link to 5 cast member pages.

Spoilers ahead

New York City’s jewel trade centers on a priceless diamond, the Blue Goddess, which must be cut before it can be moved. Bainbridge Gibbons, Reginald Owen, a New York City jeweler, has lined up an expert to cut the gem, but his own cutter, Ambrose C. Park, Red Skelton, strongly urges that he be allowed to handle the cutting.

On a park bench, Ambrose explains to a stranger that he places a newspaper ad once a year on his birthday, hoping to be reunited with the parents who abandoned him as an infant in this very spot.

Ambrose is arrested after getting drunk in public, drawing the attention of Remlick, James Whitmore, a shyster lawyer who offers to help for $400 and becomes more interested when Ambrose suggests he would pay even more if his parents could be located.

A pair of con artists enters the scheme when nightclub dancer Maggie Drumman Cara Williams and her mother Emily Drumman Dorothy Stickney are hired to pretend to be Ambrose’s sister and mother.

After the crooks try to steal the diamond, Ambrose accidentally cuts it in half; he swallows one half, Maggie the other.

As the crooks are taken away, Ambrose and Maggie go to have their stomachs pumped, and a warm romance blossoms as forgiveness follows.

Timeline

The Great Diamond Robbery Timeline: Every Key Event in Order

12 key events in the order they happen, from “Blue Goddess to be cut; dispute over cutter” to “Resolution and forgiveness”. 8 events name a place, across 7 locations.

  1. 1

    Blue Goddess to be cut; dispute over cutter

    The Blue Goddess, a diamond potentially worth $2 million, is slated to be cut. Bainbridge Gibbons has an expert lined up, but Ambrose C. Park, his own cutter, strongly urges that he do the work himself. Tension mounts as the cutting decision could determine the diamond's fate.

    When:before the cutting Where:New York City

  2. 2

    Ambrose's Central Park confession

    On a park bench, Ambrose explains to a stranger that he places a newspaper ad once a year on his birthday hoping to be reunited with the parents who abandoned him. He admits he doesn't even know his real name and was dubbed 'Ambrose Central Park' at an orphanage. This park-side confession reveals his longing for a family.

    When:on his birthday Where:Central Park

  3. 3

    Ambrose is arrested for drunkenness

    Ambrose is arrested after publicly getting drunk in New York City. The incident brings him to the attention of authorities and foreshadows the trouble ahead. It also marks the start of the entanglement with the people who will chase the diamond.

    When:that night Where:New York City street

  4. 4

    Remlick offers help for $400

    A shyster lawyer named Remlick offers to help for $400. His interest grows when Ambrose mentions that he would pay much more if his parents could be located. This marks the beginning of a questionable partnership.

    When:shortly after the arrest Where:Remlick's office

  5. 5

    Con artists enter the plan

    Con artists Maggie Drumman and her mother Emily are hired to pretend to be Ambrose's sister and mother. They enter the scheme as part of the plan to locate his supposed parents, adding a layer of deception to the search.

    When:shortly after Remlick becomes involved

  6. 6

    Crooks plot to steal the diamond

    With the con artists in place, the crooks begin to plot the theft of the Blue Goddess. Their scheme centers on exploiting Ambrose's desperate bid to locate his parents. The jewel, kept in the jeweler's shop, becomes the target.

    When:evening Where:jeweler's shop, NYC

  7. 7

    The theft attempt and the cut

    During the attempted theft, Ambrose accidentally cuts the Blue Goddess in half. The cut is precise, resulting in two halves. The room fills with shock as the plan begins to unravel.

    When:during the theft Where:jeweler's shop

  8. 8

    Half-swallowing to keep the halves safe

    In a last-ditch effort to keep the halves away from the crooks, Ambrose swallows one half while Maggie swallows the other. The move thwarts the theft but complicates their already tangled loyalties.

    When:immediately after the cut Where:jeweler's shop

  9. 9

    Crooks are captured and taken away

    The crooks are apprehended and taken away by authorities as their plan collapses. Ambrose and Maggie watch the criminals being led off, their own fates now tied to this chaotic sequence.

    When:shortly after the swallowing incident

  10. 10

    Medical recovery at the hospital

    Ambrose and Maggie are rushed to a hospital to have their stomachs pumped and the swallowed halves retrieved. The procedure is tense but successful, bringing relief to everyone involved. The incident forges an awkward bond between them as they face the consequences together.

    When:after the arrest Where:hospital

  11. 11

    Romance blooms amid the chaos

    A romantic attraction develops between Ambrose and Maggie as they navigate the odd circumstances. Despite the deception and danger, forgiveness begins to take root between them.

    When:after the hospital scene

  12. 12

    Resolution and forgiveness

    With the bond between them growing stronger, Ambrose and Maggie find a path forward together. The other players in the scheme are left to face the consequences, while the couple moves toward an uncertain, hopeful future.

    When:end of the story

Characters

Who Are the Main Characters in The Great Diamond Robbery?

5 characters, among them Ambrose C. Park (Red Skelton), Maggie Drumman (Cara Williams) and Emily Drumman (Dorothy Stickney): who each one is and the part they play in the story. Every profile links to the actor’s page.

  • AC

    Ambrose C. Park (Red Skelton)

    Played by Red Skelton

    An abandoned infant with no memory of his real name, Ambrose is hopeful, clever, and eager for belonging. His birthday ritual on a park bench reveals his longing for a real family, guiding his actions and complicating the criminals' plans. His accidental involvement in the theft and his decision to swallow half of the cut diamond become pivotal to the story's resolution.

    • 🧭 orphan
    • 🪢 search for family
    • 🪶 innocence
  • Cara Williams as Maggie Drumman (Cara Williams) in The Great Diamond Robbery

    Maggie Drumman (Cara Williams)

    Played by Cara Williams

    A nightclub dancer who becomes part of a con scheme with her mother, Emily. She is pragmatic and street-smart, yet opens up to genuine feelings for Ambrose. The romance complicates her role in the deception and adds emotional stakes to the plot.

    • 💃 dancer
    • 🕵️‍♀️ con artist
    • 💖 romance
  • ED

    Emily Drumman (Dorothy Stickney)

    Played by Dorothy Stickney

    Maggie's mother and accomplice in the plan to pose as Ambrose's sister and mother. She participates in the deception to secure money, but her involvement is tempered by family ties and later moral choices. Her actions propel the plot's twist and help move the romance forward.

    • 👩 mother
    • 🃏 accomplice
    • 🤝 family ties
  • Reginald Owen as Bainbridge Gibbons (Reginald Owen) in The Great Diamond Robbery

    Bainbridge Gibbons (Reginald Owen)

    Played by Reginald Owen

    A NYC jeweler who has the Blue Goddess lined up for cutting. He represents wealth, precision, and the professional stakes of diamond work. His priorities center on the quality and fate of the precious stone, driving much of the tension around the cut.

    • 💎 jeweler
    • 🏷️ value
    • 🧭 authority
  • R(

    Remlick (James Whitmore)

    Played by James Whitmore

    A shyster lawyer who inserts himself into Ambrose's case for money and later shows a deeper interest in locating Ambrose's parents. His opportunism pulls characters into legal and financial entanglements, highlighting manipulation within the justice system.

    • ⚖️ lawyer
    • 🃏 manipulator
    • 🤑 money-minded
Setting

Where and When Is The Great Diamond Robbery Set?

The Great Diamond Robbery is set in New York City and Central Park. Here is why the place matters to the story.

Where

New York City, Central Park

The story unfolds primarily in New York City, with pivotal scenes centered on a bench in Central Park where Ambrose first shares his longing for real parents. The urban setting frames a world of jewels, con artists and show business that collide in a single afternoon. Central Park serves as a quiet backdrop that contrasts with the movie's criminal schemes and fast-paced plot.

  • 🗽 City
  • 🌳 Park
  • 💎 Diamond
Themes

What Are the Themes of The Great Diamond Robbery?

4 ideas the story keeps returning to, among them Belonging, Deception and Diamond & Fortune.

  1. 01

    Belonging

    An abandoned child seeks a sense of family, identity, and place. Ambrose's birthday ritual and memory of being abandoned at the park anchor the film's emotional core. The pursuit of his real parents drives characters to bend the truth, testing loyalty and forgiveness. The story uses absence and reunion to explore what makes a family.

  2. 02

    Deception

    Con artists manipulate well-meaning people, leveraging Ambrose's vulnerability for money. The plot hinges on impersonations and schemes, including Maggie and her mother posing as family members. Loyalties shift as truth is bent, leading to a dramatic unraveling and the capture of criminals. The film uses deception to examine trust and betrayal.

  3. 03

    Diamond & Fortune

    The Blue Goddess diamond is the focal point of greed, ambition, and the risks of high-stakes commerce. The diamond must be cut, a choice that becomes a dramatic turning point when Ambrose accidentally halves it. The ensuing scramble tests characters' morals while the criminals are brought to justice. Wealth and value drive much of the plot's tension.

  4. 04

    Romance

    A romance blooms between Ambrose and Maggie after initial deception turns to mutual understanding. Their bond survives the schemes and legal threats, culminating in forgiveness rather than punishment. The relationship adds warmth to a story built on crime and coincidence. Love offers a path to reconciliation for characters who've lied and schemed.

Tone & mood

What Kind of Film Is The Great Diamond Robbery?

Light in tone, with fast pacing and a moderate story, going by the plot summary.

Tone
Light
Pacing
Fast
Story
Moderate
Intensity
Low
Ending
Happy

A fast-paced, lighthearted crime comedy that follows a series of chaotic mishaps and deceptions surrounding a priceless diamond, ultimately resolving with romantic connection and forgiveness.

  • comedic
  • mischievous
  • lighthearted
  • romantic
  • whimsical
  • chaotic
  • con artists
  • identity fraud
  • diamond heist
  • found family
Where to watch

Where to Watch The Great Diamond Robbery

Rent or buy it from Amazon Video and Apple TV Store. US availability and prices from JustWatch.

Streaming availability in the US, powered by JustWatch logo

Read next

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6 films close to The Great Diamond Robbery in story and themes that have a full plot summary here: The Diamond Arm (1968) and 11 Harrowhouse (1974) lead.

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FAQ

The Great Diamond Robbery Plot Questions

5 quick answers about The Great Diamond Robbery, taken from the plot summary, character guide and setting on this page and the film’s credits.

What is The Great Diamond Robbery about?

In the glittering heart of New York City's diamond district, Ambrose C. Park has built a quiet life around his work as an assistant to a diamond cutter, his steady hands and earnest demeanor belying a deeper loneliness.

Read the full plot summary

When and where does The Great Diamond Robbery take place?

The Great Diamond Robbery is set in New York City and Central Park. The story unfolds primarily in New York City, with pivotal scenes centered on a bench in Central Park where Ambrose first shares his longing for real parents.

The setting explained

Who are the main characters in The Great Diamond Robbery?

The story follows Ambrose C. Park (Red Skelton) (played by Red Skelton), Maggie Drumman (Cara Williams) (played by Cara Williams), Emily Drumman (Dorothy Stickney) (played by Dorothy Stickney) and Bainbridge Gibbons (Reginald Owen) (played by Reginald Owen); the character guide covers 5 characters in all.

All the characters

What are the main themes of The Great Diamond Robbery?

The summary picks out 4 themes: Belonging, Deception, Diamond & Fortune and Romance.

The themes explained

Who directed The Great Diamond Robbery?

The Great Diamond Robbery (1954) was directed by Robert Z. Leonard and Robert Stevenson and runs 1 hour 10 minutes.

Robert Z. Leonard’s films

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