In a series of authored films, some of our most engaging experts reveal their favourite hidden objects, forgotten places and artistic passions.
| Title | Secret Knowledge |
|---|---|
| Subtitle Available |
 ETC.
|
| Alternative Titles | |
| First Air Date | 2013-03-05 |
| Last Air Date | 2016-10-31 |
| Number of Episodes | 21 |
| Number of Seasons | 1 |
| Genres | Documentary, |
| Networks | BBC Four, |
| Casts | |
| Plot Keywords | , |
