Each chapter ended with a quick lesson in cryptography and a "brief patriotic admonishment" given by Selmer Jackson. Cline describes this as "propaganda in its basic form...delivered in the most effective way possible - by a respected authority figure in the person of one of Hollywood's most credible actors." Anne Nagel and Wade Boteler, two of the stars of the Universal serials The Green Hornet (1940) and The Green Hornet Strikes Again! (1941) were reunited in this Columbia serial. Release Theatrical The Secret Code was released in Latin America in May 1944, under the title La Clave Secreta, in English with Spanish subtitles. This serial also was released as a feature film overseas. Critical reception Harmon and Glut consider the serial to be above average for a Columbia production. Chapter titles Enemy Passport The Shadow of the Swastika Nerve Gas The Sea Spy Strikes Wireless Warning Flaming Oil Submarine Signal The Missing Key The Radio Bomb Blind Bombardment Ears of the Enemy Scourge of the Orient Pawn of the Spy Ring Dead Men of the Deep The Secret Code Smashed Source: See also List of film serials by year List of film serials by studio References External links Cinefania.com 1942 films American black-and-white films 1940s English-language films American spy films Columbia Pictures film serials Films directed by Spencer Gordon Bennet World War II films made in wartime 1940s spy films