"When Charlie's old friend from Scotland Yard is murdered when they attend a police convention in New York, Chan picks up the case he was working on."
Sidney Toler
as Charlie Chan
Victor Sen Yung
as Jimmy Chan
Donald MacBride
as Insp. Vance
Leyland Hodgson
as Robert Boggs
Melville Cooper
as Herbert 'Snuffy' Fenton
John Sutton
as Richard Jeffery
Kane Richmond
as Ralph Percy
Marjorie Weaver
as Patricia Shaw
Robert Lowery
as David Elliot
Ricardo Cortez
as George Kirby
Frederick Worlock
as Insp. Hugh Drake
Joan Valerie
as June Preston
Shirley Warde
as Mrs. Felton
Catherine Craig
as Stewardess
Clarence Muse
as Party Server
Stanley Blystone
as Fingerprint Expert
Shemp Howard
as Shorty McCoy alias Rashid the Fakir
Trevor Bardette
as Ramullah #2, with cane
Eddy Chandler
as HQ Sergeant Lefty
Lal Chand Mehra
as Ramullah, alias Aga Singh
Jimmie Dundee
as Police Officer Bill
Frank Coghlan Jr.
as Frankie O'Shaughnessy
Bud Geary
as Mechanic-Henchman with Light
Alan Davis
as Lt. Cooper, test pilot
Lee Phelps
as Police Officer Joe
Ralph Dunn
as Police Officer
Frank Fanning
Carl Faulkner
Paul Palmer
Brick Sullivan
Paul Kruger
as Guard
Charles Tannen
as Airport Announcer Voice
Bhogwan Singh
as Lineup East Indian
Kalu K. Sonkur
Nick Shaid
Jack 'Tiny' Lipson
as Hindu (unconfirmed)
Dorothy Dearing
as Mrs. Percy (unconfirmed)
Earl Derr Biggers
Characters
Harry Lachman
Director
Lester Ziffren
Writer
Sol M. Wurtzel
Executive Producer