低语史密斯之伦敦谜案

Richard Carlson

Steve Smith ("Whispering Smith")

Greta Gynt

Louise Balfort

赫伯特·洛姆

Roger Ford

Rona Anderson

Anne Carter

Alan Wheatley

Hector Reith

朵拉·布莱恩

Miss La Fosse

Reginald Beckwith

Manson

Daniel Wherry

Dr. Taren

Michael Ward

Hotel Desk Clerk

Danny Green

Cecil

James Raglan

Insp. Dave Meeker

Stuart Nichol

Martin