
Miriam Monroe and John Conrad are two young scientific workers who, independently of each other, have discovered a chemical called exonite. Miriam discovered it while searching for a cure for cancer, while Conrad used it as a basis for a powerful explosive.

as Miriam Monroe

as John Conrad

as Albert Bernard (as Harry S. Northrup)

as Randolph Monroe

as Bradford Duncan

as Eric Johansen

as Prof. Poole (as Fred C. Truesdell)

as Maj. Gen. Foster (as Redfield Clark)

as Williams

as Capt. Herbert