O Grande Segredo
| Created By | Marcos Rey | |
|---|---|---|
| Status | Ended | |
| Original Name | O Grande Segredo | |
| First Air Date | April 17, 1967 | |
| Last Air Date | November 3, 1967 | |
| Seasons | 1 | |
| Episodes | 145 | |
| Episode Runtime | 0min | |
| Language | Portuguese | |
| Original Language | Portuguese | |
| Production Countries | — | |
| Production Companies | ||
| Networks | TV Excelsior | |