The oozing mud begins to surround the new town of Redlow in an apparently organised manner.

The local residents of Kent are increasingly in danger...

Starring Roger Delgado and Maurice Denham.

Victor Pemberton's sci-fi mystery serial.

Hugh Deverill, MP …. Maurice Denham
Josef Gomez …. Roger Delgado
Dr Ken Richards …. David Spenser
Mrs Luke …. Noel Hood
Janet Marshal …. Elizabeth Proud
Inspector Baxter …. Geoffrey Matthews
Sergeant Johnson …. Wilfred Babbage
Professor Lippert …. Allan McClelland
Nursing Sister …. Eva Haddon
Dr Robeson …. Michael Kilgarriff
Professor Landers …. Rolf Lefebvre
Anna Deverill …. Marion Mathie
First Journalist …. Anthony Jackson
Second Journalist …. Hector Ross
Third Journalist/Policeman …. Brian Hewlett
RAF Corporal …. Antnony Hall
American Journalist …. Peter Marinker
Vicar …. Noel Howlett
'Tug' Wilson …. Stephen Jack
Mrs Wilson …. Miriam Margolyes

Special Effects: The BBC Radiophonic Workshop

Producer: John Tydeman

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