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.
Sidney Toler
Charlie Chan
Fortunio Bonanova
Insp. Luis Carvero
Benson Fong
Tommy Chan
Robert Emmett Keane
Alfred Wyans (as Robert E. Keane)
Willie Best
Chattanooga Brown
Carol Hughes
Marguerite Fontain
Marjorie Hoshelle
Countess Irena Masak
Barton Yarborough
Joseph Brandish
