The Living Dead at Manchester Morgue

A couple (Ray Lovelock and Cristina Galbo) travelling along the English countryside stop to get directions from a pair of Ministry of Agriculture workers who are testing an experimental device designed to drive crop-damaging insects into killing each other. While they plan their next stop, a man who has been dead for several days attacks--to be followed shortly thereafter by a full-scale zombie invasion--which could very well be a result of the agriculturist's distribution of ultrasonic radiation.