The Grey Mist

When Dr Trent takes over a medical practice in a remote country area of 1920’s England he finds locals are suspicious and superstitious. They speak in hushed tones of a grey mist which descends without warning and with deadly consequences. He believes this is only natural in a rural area barely touched by the twentieth century. But soon he senses something more. Why does he feel the presence of a patient he cannot see? Who is the young lady who waits outside the practice but never comes in? And what exactly is the grey mist, so often whispered about and never explained?