
Chan is faced with suspects in a stolen atomic bomb formula case, that are being killed with bullets that are not fired from a gun.

as Charlie Chan

as Insp. Luis Carvero

as Tommy Chan

as Alfred Wyans (as Robert E. Keane)

as Chattanooga Brown

as Marguerite Fontain

as Countess Irena Masak

as Joseph Brandish

as Edmond Slade

as Charles Masack

as Prentiss

as Josephine

as Iris Ling (as Jean Wong)

as Walter Dorn (as Donald Dexter Taylor)