Kneale had brought Quatermass's story to a close in the 1979 serial
Quatermass, and for many years saw no reason to revisit the character. However, in 1995 he was approached by
BBC Radio producer Paul Quinn with an idea for creating a drama-documentary about the character as part of a season of BBC radio programming looking back at the 1950s. Quinn told
Dreamwatch magazine: "For many people who remember the seminal experience of hiding
behind the sofa when the
Quatermass serials came on the television,
Quatermass was the 1950s. His adventures [...] have gone down in popular cultural history". Kneale was intrigued by the idea, and agreed to write new dramatic material of Quatermass relating his memories which Quinn could then combine with archive clips from the existing episodes of the various
Quatermass television serials. Kneale saw the older Quatermass of this new serial as "the same very concerned scientist who is now, in retrospect, horribly worried about what he may have done to the world through his encounters with various lifeforms that were better not contacted". It was Kneale's first radio work since he had written the play
You Must Listen for the BBC in 1952, and his first work for the BBC in any medium since the mid-1970s. The programme was commissioned in July 1995, with the original working title of
Quatermass and the Ultimate Conspiracy. When Quinn discovered that some of the soundtracks of the
Quatermass episodes were considered to be of too poor a quality to use, the idea for the series was re-shaped to add the new elements of Kneale's monologue and archive news reports. The serial was promoted in listings magazine
Radio Times with an article by Kneale about Quatermass and his opinion of other science fiction programmes. In 2006 it was released on
CD by
BBC Audio as part of their
Classic Radio Sci-Fi range, with cover artwork by
Chris Achilleos. ==Reception==