1 Tymor
8 Pennod
It's Only a Theory - Season 1 Episode 5
The guest celebrity is broadcaster Martha Kearney and the experts are Julian Richards and Dr Peter Thompson.
- Blwyddyn: 2009
- Gwlad:
- Genre: Comedy
- Stiwdio: BBC Four
- Allweddair:
- Cyfarwyddwr: Andy Hamilton
- Cast: Andy Hamilton, Reginald D. Hunter
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