USA
In 1917 Lt. Bill Gordon is headed for France when he meets and becomes friendly with Joel Carter, niece of the Asst. Secretary of War. Finding out that he is an expert on codes, she gets her uncle to cancel Bill's orders and has him reassigned to break enemy codes. In his new assignment he becomes involved with beautiful Russian spy Olivia Karloff, who is working for the Germans, and must juggle Joel's affection and his pursuit of Karloff's connections to retrieve a stolen code book. - IMDb
| The Black Chamber | USA |
| Blonde Countess | USA |
| Una cita peligrosa |  Mexico |
| Code secret |  Canada |
| Code secret |  France |
| Codice segreto |  Italy |
| Código secreto |  Spain |
| Código Secreto |  Portugal |
| Hemmelig kode |  Denmark |
| Puzzle Man | USA |
| Rendezvous |  Austria |
| Rendezvous | Canada |
| Rendezvous |  United Kingdom |
| Rendezvous | USA |
| Spione küßt man nicht |  West Germany |
| Spionhotellet |  Sweden |
| Tajna služba (literal title) |  Yugoslavia |
| Titkos randevú |  Hungary |
| Um Tenente Amoroso |  Brazil |
| Vakoilukeskus |  Finland |
| White Bird | USA |
| Рандеву |  Soviet Union |
| 米国の機密室 |  Japan |
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Mickey Rooney [15] | Country Boy |
