Screenplay Structure Analysis

Glass Onion

Written by Rian Johnson · Mystery/Thriller · 135 pages · 148 scenes · 3-act natural structure · non-linear organization · Analysis confidence: Medium

Detective Benoit Blanc travels to a Greek island to investigate a murder mystery weekend that turns deadly when the tech billionaire host's former business partner is shot, only to discover she was already murdered days earlier and her twin sister has been posing as her to expose the killer.

Tone
Darkly comedic, satirical, twisty

Tension curve

Dramatic intensity across Glass Onion from first page to last, sampled at 40 points on a 0–10 scale. Values: 3, 3.1, 3.4, 3.5, 3.8, 4.1, 4.3, 4.4, 4.3, 4.3, 4.1, 3.9, 3.6, 3.9, 4.1, 4.4, 4.3, 5.6, 7, 8.3, 7.4, 6.4, 5.1, 4.7, 5.2, 5.8, 6.4, 6.4, 6.3, 6.6, 6.7, 7.1, 7, 6.9, 7.2, 7.9, 8.7, 9.1, 8.6, 8.3.

Structure at a glance

Inciting incident
Page 25, 19% of the script: Blanc asks Lionel about the tension surrounding a woman named Andi, learning she co-founded Alpha with Miles but was legally cut out completely.
Act 1 break
Page 74, 55% of the script: Helen is shot on the island grounds, ending the murder mystery weekend and launching the investigation into what really happened.
Midpoint
Page 91, 67% of the script: Whiskey tells Helen this is her second event with the group, complains that Duke treats her like arm candy and they all ignore her, and reveals she's building her brand through Duke's channel but is uncertain about his harder-right man-dom content if she wants to get into politics eventually.
Act 2 break
Page 103, 76% of the script: The narrative returns to the island in present time after extensive flashbacks revealing Helen's true identity and mission, shifting into active investigation mode.
Climax
Page 127, 94% of the script: Everyone looks at Miles as Lionel asks why he kept the envelope, Miles looks confused, Helen pulls out the original napkin with Andi's handwriting and the bar's embossed name, Miles ignites a lighter and burns the napkin to ash in a fraction of a second, then the Mona Lisa glass case comes down and Helen smashes the painting with the Klear scepter, causing Miles to scream as she throws the scepter into the Klear contraption which explodes.
Peak tension
9.1 out of 10, reached about 95% of the way through; the script averages 5.6.
Average scene length
1.4 pages

Structural personality

This is a triptych mystery that plays with audience perception through strategic withholding and revelation. The first act presents a seemingly straightforward murder mystery weekend that ends with an apparent shooting. The second act rewinds completely, revealing that 'Andi' is actually her twin sister Helen, and replays the island events with new context while intercutting flashbacks to Andi's actual murder days earlier. The third act returns to linear time for the confrontation and climax. The structure mirrors its central metaphor—the glass onion—by appearing complex and layered while actually being transparent once you know where to look. It's a magic trick that depends on misdirection in the first act, revelation in the second, and cathartic destruction in the third.

Pacing

The opening 15 scenes establish the ensemble through rapid crosscutting during the puzzle box sequence, creating momentum before the 40-scene island arrival and setup. The pace deliberately slows during Miles's tour and dinner (scenes 26-35) to build unease. The murder mystery game accelerates through scenes 36-50 with mounting tension. Scene 51 provides a hard stop. The flashback structure of Act 2 (scenes 53-88) allows for controlled information release while maintaining urgency. The final act (scenes 106-150) is a sustained 45-scene sprint of revelation, confrontation, and literal destruction.

Themes

Similar shapes

Screenplays whose tension curve most closely matches Glass Onion.

Scene summaries and structural markers are generated by AI analysis of the screenplay text and may contain minor inaccuracies. ScriptGraph analyzes structure and does not reproduce screenplay text.

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