Nacht der Verwandlung (A Night of Change) stars Gustav Froelich as a globe-circling aviator, a character clearly based on America's Wiley Post. While basking in his celebrity at a nighttime carnival, Froelich romances Rose Stradner, the unhappy wife of brutish Heinrich George. When George refuses to give Stradner her freedom, she takes it anyway, but her fling with Froelich is doomed to disappointment. Our hero learns the hard way that one can be in a teeming crowd, yet still be all alone. Leading lady Stradner later resettled in Hollywood, where she appeared in such films as The Last Gangster and Keys to the Kingdom.
| Actor | Role |
|---|---|
 Gustav FröhlichFrank Cornelius | Frank Cornelius |
 Heinrich GeorgeBoris Pettkoff | Boris Pettkoff |
 Max GülstorffPhilippe de Brissac, Senator | Philippe de Brissac, Senator |
 Rose StradnerMaria, seine Frau | Maria, seine Frau |
 Ellen FrankFräulein Neville | Fräulein Neville |
 Gertrud WolleAmélie, seine Frau | Amélie, seine Frau |
 Harry HardtKommissar Nicole | Kommissar Nicole |
 F. W. Schröder-SchromProfessor Janta | Professor Janta |
| EElse LüdersSeine Frau | Seine Frau |
| HHans von ZedlitzDirektor Berthier | Direktor Berthier |
| AArthur ReinhardtEin Kriminalbeamter | Ein Kriminalbeamter |
| WWalter SteinwegRundfunkansager | Rundfunkansager |
| OOtto GrafRené Duval | René Duval |
| HHans AlbinNot listed | Not listed |
| LLothar DevaalNot listed | Not listed |
| LLucie EulerNot listed | Not listed |
| EEdmund FirsbachNot listed | Not listed |
| IIlse PützNot listed | Not listed |
| EErnesto RemaniNot listed | Not listed |
| RRobert Vincenti-LieffertzNot listed | Not listed |