Characters of the BookPhilo VanceJohn F.-X. MarkhamDistrict Attorney of New York County.Margaret Odell (The “Canary”)Famous Broadway beauty and ex-Folliesgirl, who was mysteriously murdered in her apartment.Amy GibsonMargaret Odell’s maid.Charles CleaverA man-about-town.Kenneth SpotswoodeA manufacturer.Louis MannixAn importer.Dr. Ambroise LindquistA fashionable neurologist.Tony SkeelA professional burglar.William Elmer JessupTelephone operator.Harry SpivelyTelephone operator.Alys La FosseA musical-comedy actress.Wiley AllenA gambler.PottsA street-cleaner.Amos FeathergillAssistant District Attorney.William M. MoranCommanding Officer of the Detective Bureau.Ernest HeathSergeant of the Homicide Bureau.SnitkinDetective of the Homicide Bureau.GuilfoyleDetective of the Homicide Bureau.BurkeDetective of the Homicide Bureau.TracyDetective assigned to District Attorney’s office.Deputy-Inspector Conrad BrennerBurglar-tools expert.Captain DuboisFinger-print expert.Detective BellamyFinger-print expert.Peter QuackenbushOfficial photographer.Dr. DoremusMedical Examiner.SwackerSecretary to the District Attorney.CurrieVance’s valet.