| Created By | Bogusław Wołoszański | |
|---|---|---|
| Status | Returning Series | |
| Original Name | Tajna historia XX wieku | |
| First Air Date | January 2, 2014 | |
| Last Air Date | January 2, 2020 | |
| Seasons | 6 | |
| Episodes | 82 | |
| Episode Runtime | 22min | |
| Language | Polish | |
| Original Language | Polish | |
| Production Countries | Poland | |
| Production Companies | ||
| Networks | Polsat PLAY | |
