Edited version of the 1942 Republic serial "Spy Smasher," cut down to one hour and sold for TV release in 1966 in a syndication package with other truncated Republic serials.

The Invisible Man's grandson uses his secret formula to spy on Nazi Germany in this comedy-thriller.

Christopher Reynolds, an American flying with the R.A.F, is shot down over German-occupied Holland and is given shelter by a Dutch family. Posing as the insane husband of the daughter of the house, Anita Wolverman, Reynolds convinces the German officer quartered there, Major Zellfritz, with the necessity for her divorce decree to be granted. After the court-hearing, Anita, goes to manage a home for retired ladies and, persuaded by Reynolds, tries to gain military information from the German Officer. When her former husband escapes from the insane-asylum his exploits are blamed on Reynolds. With the help of the old ladies and Anita, who "remarries" him, Reynolds escapes to England in a stolen German airplane.

Prior to the United States' involvement in World War II, the masked vigilante Spy Smasher fights Nazi agents operating within the US, led by the treacherous sabotage leader codenamed The Mask.

June McCarthy has unwittingly aided an undercover Nazi naval officer with acquiring a "mother ship" for German submarines in the Atlantic.

Philo is in Vienna working for the US Government to see if Archer Coe is selling aircraft designs to foreign powers. He grabs the plans with Archer's signature, but is captured by police before he can escape. Deported he comes back to America and plans to confront Archer, but Archer is found dead in his locked bedroom with a gun in his hand. While it looks like a suicide, Vance knows better and the coroner finds that Archer has been shot, hit with a blunt instrument and stabbed - making suicide unlikely. But Vance is on the case and is looking to see if government secrets have been sold and who has murdered Coe. This is a remake of "The Kennel Murder Case" using aircraft designs and espionage instead of Chinese porcelain and dog shows.

During WWI pretty German master spy Helene von Lorbeer is sent undercover to London to live with the family of a high-placed British official where she is to rendezvous with the butler Valdar, also a spy, and help him transmit secret war plans back to Germany.

Three American soldiers help a young girl deliver a secret message across enemy lines.

Hans Memling, a young intellectual, patriotic German, is secretly opposed to the Nazi regime. With the aid of Gustav Schultz, Father Pommer, Anna Wahl and others, he is gleaning accurate information from foreign radio broadcasts and distributing it through Germany with an underground-press operation.

When Barry Corvall discovers that his new bride is a possible enemy agent, he resigns from the diplomatic service to go undercover to route out an espionage ring planning to destroy American industrial capability.

Bob Hope is being stalked by a predatory widow who is a widow of wealthy husbands many times over. Martha Raye is a Texan heiress who wants to marry her boyfriend Andy Devine, but her father is determined that she marry into royalty. To solve both their problems, Martha Raye and Bob Hope decide to marry, but will they ever find love together?