John F.-X. Markham

Philo Vance

Markham, the district attorney, relies heavily on Vance's brilliant but unorthodox investigative insights, forming a close professional friendship.

Ernest Heath

Detective Heath is Markham's loyal and hardworking subordinate, often clashing with Vance but deferring to Markham's authority.

Charles Cleaver

Cleaver, a wealthy businessman and suspect, interacts with Markham primarily as a person of interest in the murder investigation.

Louis Mannix

Mannix, a theatrical producer and suspect, is questioned by Markham regarding his connection to the murdered showgirl.

Margaret Odell

Margaret Odell, a fellow showgirl and friend of the victim, is interviewed by Markham as a key witness in the case.

Tony Skeel

Skeel, a shady underworld figure and former lover of the victim, is a prime suspect repeatedly questioned by Markham.

Doctor Lindquist

Dr. Lindquist, the medical examiner, provides forensic evidence and expert testimony to Markham during the case.

Spotswoode

Spotswoode, Vance's impeccably proper butler, assists Markham by relaying messages and maintaining order at Vance's home.

Philo Vance

Markham, the district attorney, relies heavily on Vance's brilliant but unorthodox investigative insights, forming a close professional friendship.

Margaret Odell

Margaret Odell, a fellow showgirl and friend of the victim, is interviewed by Markham as a key witness in the case.

Tony Skeel

Skeel, a shady underworld figure and former lover of the victim, is a prime suspect repeatedly questioned by Markham.

Philo Vance

Markham, the district attorney, relies heavily on Vance's brilliant but unorthodox investigative insights, forming a close professional friendship.

Introductory

District Attorney of New York and Vance's closest friend; involved in the cases discussed.

Characters of the Book

District Attorney of New York County.

The Canary Murder Case

District Attorney who takes charge of the murder investigation and seeks Vance's help.

I: The "Canary"

District Attorney of New York, who takes personal charge of the investigation due to public pressure.

II: Footprints in the Snow

Expresses frustration with police evidence and announces his plan to personally investigate nightclub crimes.

III: The Murder

Arrives early at Vance's home to report the murder and enlists Vance's help.

The Bolted Door

Present in the apartment, questioning witnesses and growing impatient with the locked-room puzzle.

VI: A Call for Help

District Attorney leading the interrogation of Jessup.

VII: A Nameless Visitor

District Attorney who questions Spively and struggles with the impossibility of the murderer's entry.

VIII: The Invisible Murderer

Leads the discussion of the case's inferable facts and the impasse regarding the killer's entry and exit.

IX: The Pack in Full Cry

Receives the fingerprint report, meets Spotswoode at the club, and interrogates four witnesses from the crime scene.

X: A Forced Interview

Dines at the Stuyvesant Club and conducts a forceful interview with Charles Cleaver, extracting information about his relationship with Margaret Odell and a possible lead on Doctor Lindquist.

XI: Seeking Information

Leads the questioning of Doctor Lindquist, pressing him about his relationship with Odell and his whereabouts on the murder night.

XII: Circumstantial Evidence

Leads the interrogation of Skeel; decides to release him under surveillance and orders background checks on Cleaver and Lindquist.

An Erstwhile Gallant

Holds a press conference, interviews Mannix, and discusses Vance's theory.

XIV: Vance Outlines a Theory

Initially ridicules Vance's theory but grows seriously interested as Vance elaborates his psychological and artistic reasoning.

Four Possibilities

Initially antagonistic, becomes sympathetic to Vance's theory but remains skeptical, listing four possible suspects with alibis.

Checking an Alibi

Irritated by Vance's interruptions but agrees to arrange identification of Cleaver; later speaks sympathetically with Spotswoode.

XVIII: The Trap

Consulting with Heath in his office; Vance urges him to question Mannix about his whereabouts and the fur model Frisbee.

The Doctor Explains

Leads the questioning of Lindquist and debates with Vance about Skeel's guilt.

XX: A Midnight Witness

Conducts the official interview and orders Cleaver's arrest.

XXI: A Contradiction in Dates

Confronts Cleaver about his false alibi and presence at the crime scene, threatening arrest to compel testimony.

XXII: A Telephone Call

Interviews Doctor Lindquist, receives the jewelry discovery, and speaks with Skeel on the phone.

XXIII: The Ten O'Clock Appointment

Anxious and dependent on Skeel's confession; shaken by the discovery of Skeel's body.

An Arrest

Present at the office, listens to Heath's theory and Vance's counter-argument.

XXV: Vance Demonstrates

Accompanies Vance, skeptical but willing to observe the demonstration.

XXVI: Reconstructing the Crime

Listens skeptically to Vance's theory, frustrated that it undermines the case against Jessup.

A Game of Poker

Arranges the gathering at his apartment, tactfully manages the suspects, and is astonished by Vance's poker decisions.

XXVIII: The Guilty Man

Listens skeptically as Vance argues that Spotswoode is guilty, despite the apparent physical impossibility.

XXIX: Beethoven's "Andante"

Reluctantly accepts Vance's theory and orders a warrant for Spotswoode's arrest; expresses gratitude to Vance.

XXX: The End

Leads the arrest of Spotswoode, reluctantly carrying out his duty, and is shocked by Spotswoode's suicide.

Endnotes

Mentioned as the District Attorney in the context of the Benson murder case.