Story Structure — 5 Plot Phases
A Murder in the Ordinary Carriage
Takeru travels toward Tokyo after being thanked for solving an earlier case. Todo is found dead, and the contradictory wounds and other clues begin the investigation.
Key Events
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Case Thanks in Shimonoseki — Takeru is thanked for solving an earlier case before preparing to travel to Tokyo. Characters: Takeru Suguro
Location: Shimonoseki
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Journey to Tokyo Begins — Takeru boards the train for Tokyo and takes an ordinary carriage because sleeping compartments are full. Characters: Takeru Suguro
Location: Orient Express
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Takeru Meets Baku — Takeru meets Baku, an official returning from work, during the train journey. Characters: Takeru Suguro, Baku
Location: Orient Express
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Todo Found Dead — Todo is found dead aboard the train, and Takeru is asked to investigate. Characters: Takeru Suguro, Osamu Todo
Location: Orient Express
Clues That Refuse to Agree
Takeru examines signs of sedation, a scorched trace, and a woman's handkerchief. He considers a possible boarding point but warns that the evidence does not yet prove who committed the crime.
Key Events
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Conflicting Wound Evidence — Todo has numerous wounds that appear to have been made by both right- and left-handed attackers. Characters: Takeru Suguro, Osamu Todo
Location: Train crime scene
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Signs of Sedation — Takeru finds signs that Todo had been drugged and apparently had not resisted. Characters: Takeru Suguro, Osamu Todo
Location: Train crime scene
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Scorch Mark and Handkerchief — Takeru discovers a scorched trace and a woman's handkerchief among the clues. Characters: Takeru Suguro
Location: Train crime scene
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Maibara Boarding Theory — Takeru considers whether the killer boarded at Maibara but cautions that the clues prove no suspect's guilt. Characters: Takeru Suguro
Location: Orient Express
The Kidnapping Returns
Passenger questioning links Todo to an earlier kidnapping involving a colonel's daughter. The handkerchief and corridor testimony complicate the inquiry rather than settling it.
Key Events
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Passengers Questioned — Takeru questions passengers as the investigation turns toward Todo's past and the kidnapping. Characters: Takeru Suguro, Maiko Baba, Iwao Noto, Hakushaku Ando, Baku
Location: Orient Express
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Kidnapping Connection Emerges — The inquiry connects Todo to the earlier kidnapping of a colonel's daughter. Characters: Takeru Suguro, Osamu Todo
Location: Orient Express
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Hostility Toward Todo — A passenger reacts with hostility after Todo is identified as responsible for the kidnapping. Characters: Osamu Todo
Location: Orient Express
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Handkerchief Ownership Disputed — Suspicion falls on a woman in a red dress and an initialed handkerchief, but its owner denies it is hers. Characters: Takeru Suguro, Maiko Baba
Location: Orient Express
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Corridor Testimony Questioned — A witness's claim to have watched the corridor is questioned, leaving uncertainty around the testimony and Noto's truthfulness. Characters: Takeru Suguro, Iwao Noto
Location: Orient Express corridor
Baba's Buried Connection
Noto urges Takeru to leave Baba out of the murder inquiry. Takeru reveals her past as a governess in the household affected by the kidnapping, and Noto admits he knew and tried to protect the family.
Key Events
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Corridor Testimony Questioned — A witness's claim to have watched the corridor is questioned, leaving uncertainty around the testimony and Noto's truthfulness. Characters: Takeru Suguro, Iwao Noto
Location: Orient Express corridor
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Noto Defends Baba — Noto insists Baba is uninvolved and asks Takeru to stop bringing her into the murder inquiry. Characters: Takeru Suguro, Iwao Noto, Maiko Baba
Location: Orient Express
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Baba's Governess Past Revealed — Takeru reveals Baba once worked as a governess in the household during the kidnapping; Baba confirms it, and Noto admits he knew. Characters: Takeru Suguro, Iwao Noto, Maiko Baba
Location: Orient Express
An Unanswered Family Question
Takeru asks whether Baba knew the young Ando woman was the kidnapped girl's younger sister. Baba is astonished, but the account ends before she answers or the killer is identified.
Key Events
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Ando Family Connection Raised — Takeru asks Baba whether she knew the young Ando woman was the kidnapped girl's younger sister. Characters: Takeru Suguro, Maiko Baba, Hakushaku Ando
Location: Orient Express
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Testimony Ends Unresolved — Baba is astonished, but the available account ends before her answer or Todo's killer is identified. Characters: Takeru Suguro, Maiko Baba
Location: Orient Express