| Created By | Iker Jiménez | |
|---|---|---|
| Status | Returning Series | |
| Original Name | Cuarto milenio | |
| First Air Date | November 13, 2005 | |
| Last Air Date | September 7, 2025 | |
| Seasons | 21 | |
| Episodes | 845 | |
| Episode Runtime | 2h 0min | |
| Language | Spanish | |
| Original Language | Spanish | |
| Production Countries | Spain | |
| Production Companies | Mediaset EspañaAlma Producciones Digitales | |
| Networks | Cuatro | |
