Cast & crew
The Poisoned Light (1921)
Directed by Jan S. Kolár, Karel Lamač Written by Jan S. Kolár, Karel Lamač
Cast
| Karel Fiala | Professor Oskar Grant |
| Karel Lamač | Ing. Milan Bell |
| Jindřich Lhoták | Dr. Karel Selín |
| Anny Ondra | Anny Grant |
| Emil Artur Longen | Durk, the Magician |
| Jan S. Kolár | Ferdinand Kardan |
| Přemysl Pražský | Martin Bálek |
| Antonín Marek | Baron Evans Margus / Servant |
| Josef Šváb-Malostranský | Jan |
| Alfred Baštýř | President of Police |
| Václav Pražský | Reporter |
| Vojtěch Záhořík | Grant's Assistant |
| Jindřich Edl | Hall |
| Jiřina Janderová | Selín's Companion |
| Josef Blažek | Gatekeeper |
| Máša Kolárová | Seance Guest |
| Anna Lamačová-Karinská | Seance Guest |
Crew
| Jan S. Kolár | Director |
| Otto Heller | Director of Photography |
| Karel Lamač | Director |
| Bohuslav Šula | Production Design |
| Jan S. Kolár | Screenplay |
| Karel Lamač | Screenplay |
| Jan S. Kolár | Story |
| Karel Lamač | Story |