Story Structure — 4 Plot Phases
The Vanishing Dive
Roos disappears during a dive off Corsica, and Renotte returns alone with an account that raises suspicions. A subsequent death brings Hubert to Nice to investigate.
Key Events
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Atomic Submarine Routes at Risk — The threat of atomic war makes protection of submarine routes an intelligence priority.
Location: International waters
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The Corsica Diving Trip — Renotte and Roos go out by boat with Brigitta. Characters: Renotte, Roos, Brigitta
Location: Corsica
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Roos Disappears — Roos vanishes during a dive, and Renotte returns alone. Characters: Renotte, Roos, Brigitta
Location: Diving area off Corsica
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Renotte's Account Raises Doubts — Renotte gives an account of the dive that prompts suspicion. Characters: Renotte, Roos, Brigitta
Location: Corsica
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A Dead Man Is Found — The discovery of a dead man precedes Hubert's arrival to investigate.
Location: Unspecified
Hubert Questions the Story
Hubert challenges Renotte's explanation, citing Roos's military diving experience. He insists on going to the place where Roos vanished, but the investigation grows more dangerous.
Key Events
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A Dead Man Is Found — The discovery of a dead man precedes Hubert's arrival to investigate.
Location: Unspecified
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Hubert Arrives in Nice — Hubert arrives in Nice to investigate the death and Roos's disappearance. Characters: Hubert Bonisseur de La Bath, alias OSS 117
Location: Nice
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Hubert Challenges Renotte — Hubert argues Roos's diving experience makes an accidental disappearance unlikely. Characters: Hubert Bonisseur de La Bath, alias OSS 117, Renotte, Roos
Location: Unspecified
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Hubert Demands the Dive Site — Hubert insists that Renotte take him to the place Roos disappeared. Characters: Hubert Bonisseur de La Bath, alias OSS 117, Renotte
Location: Corsica diving area
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Renotte Is Murdered — Renotte is murdered as Hubert's investigation becomes more dangerous. Characters: Renotte, Hubert Bonisseur de La Bath, alias OSS 117
Location: Unspecified
The Chart and the Trap
After Renotte's murder and another fatal confrontation, Brigitta offers to help Hubert find Roos's sea chart aboard the Medina. A meeting arranged through her is revealed as part of a scheme to manipulate the visitors.
Key Events
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A Confrontation Turns Fatal — Another man dies during a confrontation connected to the investigation. Characters: Hubert Bonisseur de La Bath, alias OSS 117
Location: Unspecified
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Brigitta Offers the Sea Chart Lead — Brigitta agrees to help Hubert find Roos's marked chart aboard the Medina. Characters: Hubert Bonisseur de La Bath, alias OSS 117, Brigitta, Roos
Location: Unspecified
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The Meeting Becomes a Trap — Brigitta arranges a meeting with Renotte, while Mayan and Lucia discuss a plan to manipulate the visitors. Characters: Hubert Bonisseur de La Bath, alias OSS 117, Brigitta, Renotte, Mayan, Lucia
Location: Unspecified
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The Submarine Detector Plot — The group works on a submarine-detection device and prepares explosives to seal a grotto or destroy equipment. Characters: Mayan, Lucia
Location: Unspecified
The Detector Operation
Hubert follows clues toward the conspirators' villa as police attention increases. Mayan threatens Brigitta, while maps and documents are gathered and the submarine-detector operation approaches activation.
Key Events
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The Submarine Detector Plot — The group works on a submarine-detection device and prepares explosives to seal a grotto or destroy equipment. Characters: Mayan, Lucia
Location: Unspecified
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Police Attention Increases — The murders draw police attention, but Hubert continues following the clues. Characters: Hubert Bonisseur de La Bath, alias OSS 117
Location: Unspecified
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Mayan Threatens Brigitta — Mayan accuses Brigitta of helping Hubert escape and threatens her family. Characters: Brigitta, Mayan, Hubert Bonisseur de La Bath, alias OSS 117
Location: Unspecified
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Maps and Documents Gathered — Sacha gathers maps and documents as the detector operation nears activation. Characters: Sacha
Location: Conspirators' villa
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The Operation Draws Near — Pursuers close in on Hubert and Brigitta as the operation against the submarines is poised to proceed. Characters: Hubert Bonisseur de La Bath, alias OSS 117, Brigitta, Mayan, Sacha
Location: Unspecified