"What's The Signal"
Major Thorpe (writer and artist), Mort Leav (pencils and inks)
Published in Jumbo Comics #46, Dec 1942 - 8 pages
A friend of ZX-5 is tortured in Sweden to reveal the signal to him in a hotel to receive vital military intelligence. A trap with a beautiful woman is laid and suddenly ZX-5 is in a nasty situation.