A dangerous amnesiac escapes from an asylum, hides in the opera house, and is suspected of getting revenge on those who tried to murder him 13 years ago.
as Charlie Chan
as Gravelle
as Lee Chan
as Sergeant Kelly
as Inspector Regan
as Mme. Lilli Rochelle
as Enrico Borelli
as Mme. Lucretia Borelli
as Mr. Whitely
as Mlle. Kitty
as Phil Childers
as Mr. Arnold
as Pop Morris - Stage Doorman
as Undetermined Minor Role (uncredited) (unconfirmed)
as Dancer in Opera (uncredited)
as Detective (uncredited)
as Soldier in Opera (uncredited)
as Murdered Orderly (uncredited)
as Backstage Cop Who Shoots Gravelle (uncredited)
as Villager in Opera (uncredited)
as Guard (uncredited)
as Dancer in Opera (uncredited)
as Villager in Opera (uncredited)
as Mme. Rochelle (singing voice) (uncredited)
as Cop (uncredited)
as Detective (uncredited)
as Opera Spectator (uncredited)
as Cop (uncredited)
as Opera Supernumerary (uncredited)
as Opera Spectator (uncredited)
as Innkeeper (uncredited)
as Cop (uncredited)
as Villager in Opera (uncredited)
as Villager in Opera (uncredited)
as Detective (uncredited)
as Opera Spectator (uncredited)
