Republic Pictures’ serials just had a snap to them that the other studios didn’t. Credit house director William Witney, a master of wild fistfight scenes and truly harrowing cliffhangers. This slice of wartime Yellow Peril is among his best work. It’s got one of the greatest opening chapters, a twenty-four minute wonder packed with evil bad guys, sudden death, a crazed fight in a room on fire and a rare scene for the time in which a pursued woman can take care of herself. She even jumps out of a moving car on her way to defeating the bad guys. This serial was so well-liked that star Rod Cameron’s next serial, Secret Service in Darkest Africa, being filmed as this one was still unfolding on movie palace screens, was hastily re-written as a sequel.