Character Relationship Map: Black Light

Characters

• Yves Guyot (played by Patrick Poivey) — protagonist

  Air France engineer and the film's protagonist who investigates a fatal police blunder at CDG airport to secure testimony from a marginalized witness and expose institutional cover-ups.

• Ghislaine Guyot (played by Inês de Medeiros) — protagonist
• Commissioner London (played by Charlie Bauer) — supporting

  Senior police commander responsible for managing the institutional fallout of the airport homicide while navigating intense political pressure from rising terrorist attacks in Paris.

• Inspector Cadin (played by Gilles Ségal) — supporting

  Police inspector assigned to the airport homicide case, likely prioritizing institutional reputation and procedural compliance over uncovering the full truth.

• Judge Berthier (played by Roland Bertin) — supporting

  Judicial official overseeing the legal proceedings surrounding the homicide and the administrative expulsion status of the Malian eyewitness.

Canonical Relationships

Family, romantic, and professional connections based on plot evidence.

• Ghislaine Guyot → Judge Berthier (Professional Legal Advisor) — Consults Berthier to understand legal avenues for witness protection.
• Commissioner London → Inspector Cadin (Power Commander) — Superior officer who directs Cadin's operations to manage the cover-up and detainee expulsion.
• Yves Guyot → Judge Berthier (Professional Legal Petitioner) — Judicial authority Yves approaches to secure legal protection and force testimony.
• Yves Guyot → Ghislaine Guyot (Family Spouse) — Wife who provides emotional stability and logistical support during the investigation.

Story Dynamics

Alliances, conflicts, and narrative interactions that evolve throughout the story.

• Ghislaine Guyot → Inspector Cadin (Social Acquaintance) — Encounters Cadin during attempts to navigate the bureaucratic blockade.
• Ghislaine Guyot → Commissioner London (Social Acquaintance) — Faces indirect pressure from police hierarchy as Yves's spouse.
• Commissioner London → Judge Berthier (Alliance Institutional Partner) — Coordinates with the judiciary to frame the case as a security matter rather than a police blunder.
• Yves Guyot → Inspector Cadin (Conflict Obstructing Officer) — Investigating officer who tracks Yves and enforces the detention of the witness.
• Yves Guyot → Commissioner London (Conflict Adversary) — Police chief who actively suppresses evidence to protect the force's image during terror attacks.

Story Analysis

Yves Guyot investigates a fatal police blunder while trying to secure testimony from a marginalized eyewitness threatened with expulsion.

Plot Progression

1. The Airport Death — A fatal police blunder occurs at Roissy–Charles de Gaulle Airport. Yves Guyot, a friend of the victim and an Air France engineer, begins seeking the truth.
2. Pressure Around Paris — Yves's investigation threatens the image of the police. His efforts unfold as a wave of terrorist attacks unsettles Paris.
3. The Hidden Eyewitness — Yves learns that the homicide's only eyewitness is a young Malian man. The witness is being held in a hotel with others awaiting expulsion.
4. A Race For Testimony — Yves must obtain the eyewitness's testimony before the expulsion to Mali. His pursuit of justice becomes increasingly urgent.