USA
A lion escapes Nick Coster's carnival and is captured by grocery clerk Matt Varney whom Nick brings into the show and eventually makes chief lion tamer. When Nick finds out Matt has fallen for his convent-bred sister Mary he makes him go into the cage with the insane lion Caesar. - IMDb
| Amor eterno |  Mexico |
| Amor eterno | USA |
| L'amour et la bête |  Belgium |
| L'amour et la bête |  France |
| Caravanele circulă noaptea |  Romania |
| Carnival | USA |
| Il circo insanguinato |  Italy |
| El Circo sangriento |  Venezuela |
| El Circo sangriento |  Spain |
| Cyrkowe wozy |  Poland |
| De Liefde en het beest | Belgium |
| Die Löwen reißen aus |  Austria |
| Die Löwen reißen aus |  Switzerland |
| O ekdikitis (transliterated title) |  Greece |
| O Que as Trevas Ocultam |  Portugal |
| A Tragédia do Circo |  Brazil |
| Tragédia no Circo | Brazil |
| Vagnarna rulla om natten |  Sweden |
| Vaunut vierivät yössä |  Finland |
| Von Stadt zu Stadt |  West Germany |
| The Wagons Roll at Night |  Canada |
| The Wagons Roll at Night |  United Kingdom |
| The Wagons Roll at Night | USA |
| Ο εκδικητής | Greece |
| Поезда проезжают ночью |  Soviet Union |
 |
Joan Leslie [16] | Mary Coster |
 |
Buster Phelps [14] | Boy |
 |
Robert Winkler [14] | Boy |
 |
Payne B. Johnson [10] | Boy |
|
Harry Harvey Jr. [11] | Boy |
|
Fred Walburn [12] | Boy |
|
Tom Braunger [11] | Boy |
