Average action adventure, battle-dressed up by the activities in the Pacific following Pearl Harbor, and particularly centered on the counter-espionage exploits of an American, Graydon, against the coconut wireless. About to return to America after a rough time in Malay as a civilian volunteer, Graydon agrees to stay on to rescue jungle operative Brownlee- who dies in the bush-, then takes on Brownlee's job- the stoppage of a security leak in Ceylon. Knowing that German Captain Von Ulsted is the head of the Japanese spy system- but not knowing his present alias, falling in love with an agent- Fleur- but not trusting her, Graydon carries on to the final exposure of the enemy and the vindication of Fleur...Atmospheric amplification and authenticity gives this credit in spite of fairly manufactured manoeuvers.