The cat and mouse game between government agents and a spy ring that has taken secret documents from a plane crash in Germany, not far from an US military research centre.
| Actor | Role |
|---|---|
 Patrick AllenJohn Lane | John Lane |
 Jacqueline EllisMary | Mary |
 James MaxwellRay Ellis | Ray Ellis |
 Zena WalkerAnnette Lane | Annette Lane |
 Ewan RobertsCol. Burlinson | Col. Burlinson |
 Harold GoodwinEdwards | Edwards |
| RReed De RouenGeneral Waring | General Waring |
 Anton RodgersCurtis | Curtis |
 Jack MayBurton | Burton |
 Sean LynchPorter | Porter |
 A. J. BrownMinister | Minister |
| VVictor PlattHent | Hent |
| MMichael CorcoranLittle | Little |
| SSheldon LawrenceAmerican Officer | American Officer |
 Robert RaglanSecurity Officer at Check-in Desk | Security Officer at Check-in Desk |