Dust of Doom

Published in Operator #5 #21, December 1935
"Captain John Vedders of the Military Intelligence had strict orders: "Destroy that powder I" They sent him on a wild chase after a mad inventor, a ruthless Polish spy-master - and a lovely girl who carried death in her hands!" The inventor was Walter Armitage and he claimed that one whiff of a very fine, white powder would make "a man insane, instantly" He would turn on anyone near him and kill them only to die himself within minutes.