USA
The story revolves around three people; Tycoon Bjorn Faulkner, who is being called upon by his board of directors to explain a missing $20,000,000; Kit Lane, his secretary who also has a personal interest; and Steve Van Ruyle, a sailor who has inherited a position on Faulkner's board of directors. Faulkner is (presumably) murdered, and Kit is falsely accused of the murder. Steve assumes the job of clearing her name. - IMDb
| A Chave do Mistério |  Brazil |
| La clave del misterio |  Mexico |
| I nyhta tis 16is ianouariou (transliterated title) |  Greece |
| En la noche del 16 de enero |  Spain |
| Minuit, 16 janvier |  France |
| Natten till den 17 januari |  Sweden |
| The Night of January 16th |  Australia |
| The Night of January 16th |  Canada |
| The Night of January 16th |  United Kingdom |
| The Night of January 16th | USA |
| O Mistério Daquela Noite |  Portugal |
| Pako yössä |  Finland |
| Private Secretary | USA |
| Secrets of a Secretary | USA |
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George Mari [14] | Cuban Pageboy |
