An internationally-notorious criminal scientist returns to the US to sell his latest invention, a disintegrating gas, to a foreign power. When he arrives, however, he is spotted by a young Coast Guard man, whom he kills - and thus earns the enmity of the entire US Coast Guard, but especially the murdered Guardsman's older brother who, together with his reporter-girlfriend and her comical photographer, vigorously sets to tracking him down and interfering with his plans to develop the city-melting gas in quantity. A Republic Serial in 12 Chapters.
Unfortunately the movie SOS Coast Guard is not yet available on HBO Max.
| Directing | William Witney | Director |
| Directing | Alan James | Director |
| Writing | Franklin Adreon | Screenplay |
| Editing | Helene Turner | Editor |
| Production | Sol C. Siegel | Associate Producer |
| Sound | Terry Kellum | Sound Engineer |
| Sound | Raoul Kraushaar | Music Director |
| Editing | Edward Todd | Editor |
| Writing | Morgan Cox | Story |
| Writing | Barry Shipman | Screenplay |
| Writing | Ronald Davidson | Story |
| Camera | William Nobles | Director of Photography |
