Influenced by the social and geopolitical situation of the early 1970s and the hippie youth movement of the late 1960s, Quatermass is set in a near future in which large numbers of young people are joining a cult, the Planet People, and gathering at prehistoric sites, believing they will be transported to a better life on another planet. In this version, the character is played by John Mills. It is the fourth and final television serial to feature the character of Professor Bernard Quatermass. Like its three predecessors, Quatermass was written by Nigel Kneale. Quatermass (also known as Quatermass IV, or The Quatermass Conclusion for its intended international theatrical release) is a British television science fiction serial produced by Euston Films for Thames Television and broadcast on the ITV network in October and November 1979.