The show is centered on the character of Professor Bernard Quatermass who, albeit older than in the previous series, is "the same very concerned scientist" but worried about his previous decisions. Andrew Keir, who had played Quatermass in the 1967 film Quatermass and the Pit, was chosen to voice the character. Later, Nigel Kneale himself became dismissive of the serial, but critics gave the production relatively positive reviews.
