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...

Genres

Cast

Leslie Banks

Capt. Hyde

Kay Walsh

Alison Devar

Mackenzie Ward

Newton Hulls

Cecil Parker

Cmdr. Herbert

Ellen Pollock

Margaret Hulls

Nigel Stock

Rudd

Kynaston Reeves

Prof Devar

Charles Eaton

Commander-in-Chief

Ian Fleming

Naval Intelligence Officer