I quickly secured the scriptbooks for the preceding two serials in the cycle, THE QUATERMASS EXPERIMENT and QUATERMASS II. The book for that fourth serial, simply entitled QUATERMASS, emerged as a novelisation by Kneale containing material not in the serial, including the elderly Quatermass getting laid by a woman in her late forties. I remember distinctly a moment in that scene where, with Quatermass’ wrinkled paw on her breast, she says, in a small voice, “I’m only me.”
QUATERMASS remains Kneale’s only full-length novel. I still have it on the top shelf in my office.