1 Tymor
26 Pennod
Colonel March of Scotland Yard - Season 1 Episode 12
A scientist conducting cancer research is convinced that his test monkey was not only stolen but replaced. He is later found dead from gas, and Colonel March must prove if it was suicide or not.
- Blwyddyn: 1957
- Gwlad: United Kingdom
- Genre: Drama
- Stiwdio: ITV1
- Allweddair: detective, creature
- Cyfarwyddwr: John Dickson Carr
- Cast: Boris Karloff, Ewan Roberts, Eric Pohlmann