The head of Dartmouth Training College has been murdered, and his successor, Captain Hyde, suspects that he himself may have been the intended target. He enlists the help of his own son Philip, a reluctant cadet at the college, to help him confirm his suspicions about planned enemy action... but meanwhile, there is a Secret Service agent staying at the college observatory, the foreign-born professor of astronomy is behaving strangely, and Naval Intelligence disclaim any knowledge of what is going on...
Unfortunately the movie Sons of the Sea is not yet available on HBO Max.
| Directing | Maurice Elvey | Director |
| Production | Louis London | Production Manager |
| Directing | Fred V. Merrick | Assistant Director |
| Writing | Gerald Elliott | Screenplay |
| Writing | Maurice Elvey | Screenplay |
| Writing | George Barraud | Scenario Writer |
| Writing | D. William Woolf | Scenario Writer |
| Writing | Reginald Long | Dialogue |
| Production | K.C. Alexander | Producer |
| Camera | Eric Cross | Director of Photography |
| Editing | Douglas Myers | Editor |
| Art | James A. Carter | Art Direction |
| Costume & Make-Up | Harold Fletcher | Makeup Artist |
| Sound | Leo Wilkins | Sound |
| Camera | Skeets Kelly | Camera Operator |
| Camera | Ted Moore | Camera Operator |
