Tommy Grayson is arrested on suspicions of sabotage following the destruction of a series of test flights for the government. Major Grayson, Tommy's father, tries to clear the charges against his son but finds only the scorn of the town since the aircraft plant's closing following the sabotage. The Major gets a lead, and with a group of former army veterans, goes to investigate Tommy's co-worker, but the Major gets caught by the leader of the fifth columnists and it seems all done once the leader, Gardner, plans to blow up the plant and keep the major from talking. Enjoyable B spy thriller once it gets past the romance angle at the beginning of the film w/ Tommy and his new bride Gail. Grapewin has one of his biggest roles and makes the most of it as the Major, as well as Littlefield who has a field day as former Civil War vet Eli. The film moves along a good clip and its interesting in the fact of being one of the first Bs about spies on the homefront, especially with the spies being German. Rating, based on B's, 8.