Overview
When a massive Soviet battleship negotiates the treacherous Oslo harbor without a local pilot, American counterespionage agent David Harding suspects that the enemy has developed a secret navigational tool and orders his operatives to find a local frogman to take pictures of the vessel's hull when the ship makes a goodwill tour stop in England.
Cast
- Don Megowan as David Harding
- Brad Johnson as Keller
- Gerald Milton as Admiral Gihls
- Phyllis Stanley as Nora
- John Mylong as Dr. Jasny
- Robert McQueeney as Terrence 'Finnie' Finn