Characters of the Book
- Philo Vance
- John F.-X. Markham
- District Attorney of New York County.
- Margaret Odell (The “Canary”)
- Famous Broadway beauty and ex-Follies girl, who was mysteriously murdered in her apartment.
- Amy Gibson
- Margaret Odell’s maid.
- Charles Cleaver
- A man-about-town.
- Kenneth Spotswoode
- A manufacturer.
- Louis Mannix
- An importer.
- Dr. Ambroise Lindquist
- A fashionable neurologist.
- Tony Skeel
- A professional burglar.
- William Elmer Jessup
- Telephone operator.
- Harry Spively
- Telephone operator.
- Alys La Fosse
- A musical-comedy actress.
- Wiley Allen
- A gambler.
- Potts
- A street-cleaner.
- Amos Feathergill
- Assistant District Attorney.
- William M. Moran
- Commanding Officer of the Detective Bureau.
- Ernest Heath
- Sergeant of the Homicide Bureau.
- Snitkin
- Detective of the Homicide Bureau.
- Guilfoyle
- Detective of the Homicide Bureau.
- Burke
- Detective of the Homicide Bureau.
- Tracy
- Detective assigned to District Attorney’s office.
- Deputy-Inspector Conrad Brenner
- Burglar-tools expert.
- Captain Dubois
- Finger-print expert.
- Detective Bellamy
- Finger-print expert.
- Peter Quackenbush
- Official photographer.
- Dr. Doremus
- Medical Examiner.
- Swacker
- Secretary to the District Attorney.
- Currie
- Vance’s valet.