Tipped that terrorists have slipped a detonator onto a freight train bearing military ordinance, the British authorities stop the line and evacuate the area. Vacationing munitions expert Peter Lyncort (Glenn Ford) makes a busman’s holiday of it, as he must locate and defuse the device before it blows. Taut suspenser from director Ted Tetzlaff co-stars Anne Vernon, Maurice Denham, Harcourt Williams. 72 min. Standard; Soundtrack: English Dolby Digital mono.