Singapore is the locale for this spy melodrama about the abduction of a nuclear scientist. Dan Duryea, Patric Knowles. Pederas: Gene Lockhart. Bone: Reginald Denny. Frennessey: Marian Carr. McCollum: Douglass Dumbrille. O'Connor: Arthur Shields. Wong: Keye Luke. Coutts: Nigel Bruce. Robert Aldrich directed.