T. B. Smith

Mr. Gregory Farrington

Mr. Farrington and T. B. Smith have a tense professional relationship, likely as employer and investigator or adversary.

Count Poltavo

Count Poltavo and T. B. Smith are direct antagonists, with Smith hunting Poltavo's criminal activities.

Dr. Fall

Dr. Fall and T. B. Smith are adversaries, with Smith pursuing Fall for his role in criminal experiments.

Frank Doughton

Frank Doughton and T. B. Smith are allies, with Smith helping Doughton protect Doris Gray.

Mr. Ela

Mr. Ela is a subordinate or informant working with T. B. Smith in his investigation.

Mr. Moole

Mr. Moole assists T. B. Smith as a colleague or agent in the case.

Montague Fallock

Montague Fallock is a professional contact or witness aiding T. B. Smith's investigation.

Mr. Gregory Farrington

Mr. Farrington and T. B. Smith have a tense professional relationship, likely as employer and investigator or adversary.

Mr. Gregory Farrington

Mr. Farrington and T. B. Smith have a tense professional relationship, likely as employer and investigator or adversary.

Mr. Moole

Mr. Moole assists T. B. Smith as a colleague or agent in the case.

Dr. Fall

Dr. Fall and T. B. Smith are adversaries, with Smith pursuing Fall for his role in criminal experiments.

Count Poltavo

Count Poltavo and T. B. Smith are direct antagonists, with Smith hunting Poltavo's criminal activities.

II

Investigates the double murder outside Farrington's house, deduces a third shooter, and finds a scent bottle belonging to Lady Constance Dex.

III

Works late at Scotland Yard, compares fingerprints, deduces Montague Fallock's identity, and discovers his office burgled.

V

Mentioned as being watched by Poltavo, who claims Smith has surrounded the Jollity with detectives.

VI

Observes from the stalls, rushes to the royal box after the shot, and announces the warrant for Farrington's arrest.

VII

Investigates Farrington's case; reveals a headless body was found; intercepts Dr. Goldworthy to prevent kidnapping.

VIII

Interviews Lady Constance Dex in his study, deduces her presence at the murder scene, and orders her surveillance.

IX

Investigates the Secret House and interviews Lady Constance Dex.

The Reading of the Will

Attends the will reading; observes the reactions of Poltavo and others; later escorts Poltavo to Scotland Yard for a private conversation.

XI

Arrives at the Secret House and rescues Poltavo from the lift, discovering the message Poltavo had written.

XII

Leads the raid on the Secret House, disables alarms, and confronts Dr. Fall after a mysterious encounter with a masked man.

XIII

Reveals Farrington's identity as Montague Fallock and explains the murders in Brakely Square to his chief.

XV

Investigates Lady Constance's disappearance at Moor Cottage, discovers Frank Doughton, and re-examines the locket from the Brakely Square murders.

XVII

Plays golf at Walton Heath, receives news, and explains his deductions about Farrington's scheme to Ela. Later foils an assassination attempt and arranges the deportation of the attacker.

XVIII

Disguises himself as an old messenger to capture Poltavo; orchestrates the arrest and negotiates for information about the Secret House.

XIX

Captures Poltavo on the downs, inspects the Secret House with detectives, and searches the underground room where Poltavo was hidden.

The Last Hand

Captured and strapped to an electric chair; refuses Farrington's ultimatum; loses consciousness after a shock.

XXI

Found strapped in a chair in the underground room, rescued by Ela.