Secrecy and Hidden Truth

Where it surfaces

• I: A Double Tragedy

  The narrator emphasizes that the true inner history of the Greene tragedy has never been revealed, and that the public is ignorant of the psychological motives and analytic steps behind the solution.

• The Investigation Opens

  Chester Greene's vague fears and evasiveness, along with the missing revolver and the unusual details of the crime scene, suggest hidden motives and concealed information.

• At the Greene Mansion

  Julia's habit of locking her door and the locked doors of other family members suggest hidden secrets.

• IV: The Missing Revolver

  The missing revolver and the servants' evasive or contradictory accounts hint at concealed knowledge about the crime.

• V: Homicidal Possibilities

  The disappearance of Chester's revolver and Sibella's evasive answers about it highlight hidden motives and concealed information within the household.

• VI: An Accusation

  Ada's evasive answers about the attacker's identity and the mysterious presence in the dark underscore hidden truths.

• Vance Argues the Case

  Vance insists that the crime's explanation lies in the hidden, abnormal relationships within the house, and points to unexplained facts like the missing revolver and the lights.

• VIII: The Second Tragedy

  Rex's vague account of noises and the lack of witnesses suggest hidden truths and secrets within the family.

• IX: The Three Bullets

  Sproot's evasiveness and the family's guarded responses suggest hidden motives and concealed information.

• X: The Closing of a Door

  Mrs. Mannheim's evasiveness and the servants' guarded testimonies highlight the theme of concealed pasts and unspoken connections to the crimes.

• A Painful Interview

  Vance insists the truth is hidden in the atmosphere of the house, and the missing revolver remains a central secret.

• A Motor Ride

  Vance's seemingly casual visits conceal a deliberate investigation; trivial incidents later prove sinister, underscoring hidden truths.

• XIII: The Third Tragedy

  Ada reveals that Rex hid the fact he heard the shot and something else, and she speaks of a 'secret' that terrifies him, underscoring the theme of concealed knowledge.

• XIV: Footprints on the Carpet

  The missing blue envelope and the possibility of someone listening in on phone calls highlight hidden knowledge and secret motives.

• XV: The Murderer in the House

  Characters' alibis are checked and cross-referenced; Vance suspects the footprints are deliberately left, hinting at a hidden design.

• The Lost Poisons

  The hidden galoshes and the stolen poisons underscore the theme of concealed evidence and hidden motives within the household.

• Two Wills

  The theft of poisons, the surreptitious return of the galoshes, and the plan to tap the telephone line all underscore the hidden maneuvers and secrets within the investigation.

• XVIII: In the Locked Library

  The locked library, kept sealed for twelve years, symbolizes hidden secrets; Vance insists on uncovering what lies within.

• XIX: Sherry and Paralysis

  Ada's secret revelation and Vance's sense of a 'black terrible intrigue' highlight hidden motives and deception.

• XX: The Fourth Tragedy

  The poisoning is kept secret from most of the household to allow for a potential confession from Ada, highlighting the theme of hidden truths and strategic concealment.

• XXI: A Depleted Household

  Hemming reveals Von Blon's secret late-night visit to Sibella, and the circumstances of the poisonings remain obscured.

• XXII: The Shadowy Figure

  The shadowy figure in the hall and the mystery of the Oriental shawl represent hidden truths that must be uncovered to solve the case.

• XXIII: The Missing Fact

  The chapter centers on the revelation of Sibella and Von Blon's secret marriage, a hidden fact that Vance believes is key to understanding the crimes.

• A Mysterious Trip

  Vance withholds the murderer's identity until he can verify evidence, and the chapter revolves around uncovering hidden facts and the 'truth' behind the crimes.

• XXV: The Capture

  Vance's secret trip and the gradual revelation of Ada as the murderer underscore the theme of hidden truth.

• XXVI: The Astounding Truth

  The chapter reveals the hidden truth about Ada's parentage, her secret use of the library, and her concealed motives, all of which were obscured until Vance's investigation.

• Endnotes

  Notes about hidden evidence (e.g., the cyanide tablets, the rearranged sequence of items, and Mannheim's secret promise to Tobias) emphasize the theme of concealed facts and the uncovering of truth.