Redlow’s MP becomes increasingly distant and erratic. Then his old enmity with Professor Gomez surfaces.

Meanwhile scientists who've been examining a sample of mud from the slide get a nasty surprise...

Starring Roger Delgado and Maurice Denham.

Victor Pemberton's sci-fi mystery serial.

Hugh Deverill, MP …. Maurice Denham
Josef Gomez …. Roger Delgado
Professor Landers …. Rolf Lefebvre
Inspector Baxter …. Geoffrey Matthews
RAF Corporal …. Anthony Hall
'Tug' Wilson …. Stephen Jack
Professor Lippert …. Allan McClelland
Anna Deverill …. Marion Mathie
Dr Ken Richards …. David Spenser
Nursing Sister …. Eva Haddon
Mrs Wilson …. Miriam Margolyes
Mrs Luke …. Noel Hood

Special Effects: The BBC Radiophonic Workshop

Producer: John Tydeman

First broadcast on the BBC Light Programme in March 1966. Show less