"Skillfully directed by Roy Ward Baker, Quatermass is resplendent with suspense, action and melodrama that never verge too far into the realms of camp. Despite seeming dated and unintentionally funny to contemporary audiences, the film remains valid and actually is one of the more thought provoking of science fiction horror films out there. By turning the typical sci fi film plot on its head, Quatermass is actually unpredictable and poses intelligent questions that help give it a sense of realism that can obviously not be found in the bulk of Hammer's work (I mean, however great the films are, we all know that Dracula and Frankenstein's monster aren't actually real!). Although the prospect of alien invasion is often considered implausible, Quatermass certainly makes a compelling case for the plausibility of a past invasion that never came into fruition. Aside from this, it's quite simply a very enjoyable film!" - Stuart Cummins, What Culture