Prohibited from seeing her actor sweetheart Herman Brandt by her tyrannical parents, sweet young Vienesse lass Mariette defies authority by regularly visiting Brandt's downstairs apartment. The lovers' signal is a song called "The Firebird," which Brandt sings whenever he wants Mariette to visit him. When the actor is murdered, poor Mariette and her parents are prime suspects. But the truth is a bit more complicated than that, involving as it does a haughty aristocrat, a powerful diplomat and a most unusual "candid camera" device.
Unfortunately the movie The Firebird is not yet available on HBO Max.
| Directing | William Dieterle | Director |
| Writing | Charles Kenyon | Screenplay |
| Writing | Lajos Zilahy | Theatre Play |
| Writing | Jeffrey Dell | Adaptation |
| Camera | Ernest Haller | Director of Photography |
| Editing | Ralph Dawson | Editor |
| Art | Anton Grot | Art Direction |
| Costume & Make-Up | Orry-Kelly | Costume Design |
| Production | Gilbert Miller | Producer |
| Sound | Leo F. Forbstein | Music |
