Ada Greene

Philo Vance

Ada trusts and confides in Vance, seeing him as a protector and ally amid the family turmoil.

Sibella Greene

Ada and Sibella are sisters, but their relationship is strained by jealousy and suspicion.

Doctor Von Blon

Ada has a cordial, trusting relationship with Von Blon, who cares for her health and well-being.

Rex Greene

Ada is protective of her younger brother Rex, who is frail and often victimized by the family's dysfunction.

Ernest Heath

Ada cooperates with Heath and appreciates his straightforward, protective demeanor during the investigation.

Chester Greene

Ada and Chester are siblings, but Chester bullies and dominates Ada, creating a hostile dynamic.

Philo Vance

Ada trusts and confides in Vance, seeing him as a protector and ally amid the family turmoil.

Ernest Heath

Ada cooperates with Heath and appreciates his straightforward, protective demeanor during the investigation.

Doctor Von Blon

Ada has a cordial, trusting relationship with Von Blon, who cares for her health and well-being.

Sibella Greene

Ada and Sibella are sisters, but their relationship is strained by jealousy and suspicion.

Sibella Greene

Ada and Sibella are sisters, but their relationship is strained by jealousy and suspicion.

Philo Vance

Ada trusts and confides in Vance, seeing him as a protector and ally amid the family turmoil.

The Greene Murder Case

A central figure in the family dynamics.

I: A Double Tragedy

Youngest adopted daughter; shot and wounded, with a chance of recovery.

The Investigation Opens

One of the victims; she was shot from behind and is unconscious but expected to be questioned later.

VI: An Accusation

The wounded victim, interviewed in her bed; recounts the attack with fear and hesitation.

A Motor Ride

Still recovering from poisoning, with her arm in a sling. She appears farouche when approached by Vance.

XIII: The Third Tragedy

Visits Markham's office to reveal that Rex heard the shot and something else that terrified him, and asks Markham to question Rex away from the house.

XIV: Footprints on the Carpet

Reluctantly returns to the mansion, feeling responsible for Rex's death; is sent to her room to rest.

Two Wills

Mentioned as a possible legatee under the will; her fingerprints were found in Rex's room; the will allows her to marry and live elsewhere without losing inheritance since she is not Tobias's biological child.

XIX: Sherry and Paralysis

Reveals she saw her mother walking near the library door late at night, holding a key, despite her paralysis.

XX: The Fourth Tragedy

Ada is poisoned with morphine in her bouillon but survives thanks to Doctor Drumm's prompt treatment. She is expected to be questioned the next day.

XXI: A Depleted Household

Recovered from poisoning; recounts drinking bouillon and feeling ill; expresses fear after learning of her mother's death.

XXII: The Shadowy Figure

The key witness who saw a figure in the hall wearing her mother's shawl; Vance believes her identification was influenced by fear.

XXIII: The Missing Fact

Mentioned in the summary of past crimes as a victim of the first double shooting.

A Mysterious Trip

Referenced in Sproot's recollection of the night she was shot; the window in her room was open.

XXV: The Capture

Revealed as the murderer; attempts to shoot Vance but is disarmed and handcuffed.

XXVI: The Astounding Truth

Revealed as the murderer; driven by hatred, jealousy, and a desire for freedom, she used knowledge from Gross's manual to commit the crimes.

Endnotes

Noted as having taken cyanide tablets from Doctor Von Blon's darkroom and as being cared for by Mrs. Mannheim after Mannheim's promise from Tobias.

List of Illustrations

Her bedroom is illustrated in the floor plans.