USA
Dr. Hohner (Karloff), theatre physician at the Vienna Royal Theatre, murders his mistress, the star soprano when his jealousy drives him to the point of mad obsession. Ten years later, another young singer (Foster) reminds Hohner of the late diva, and his old mania kicks in. Hohner wants to prevent her from singing for anyone but him, even if it means silencing her forever. The singer's fiancée (Bey) rushes to save her in the film's climax. - IMDb
| Climax |  Brazil |
| The Climax |  Canada |
| The Climax |  United Kingdom |
| The Climax | USA |
| Farlig makt |  Sweden |
| De Hartstocht van Dr Hohner |  Belgium |
| Misterio en la ópera |  Spain |
| La passion du docteur Hohner |  France |
| La passion du Dr Hohner | Belgium |
| El Ruiseñor y el cuervo |  Argentina |
| El Ruiseñor y el cuervo |  Mexico |
| Strast za operom (literal title) |  Yugoslavia |
| Teaterlægens hemmelighed |  Denmark |
| Terror na Ópera |  Portugal |
| To mystiko tis Operas (transliterated title) |  Greece |
| Vaarallinen rakkaus |  Finland |
| La voce magica |  Italy |
| Кульминация |  Soviet Union |
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Scotty Beckett [15] | The King |
