The plot involves a San Francisco health inspector and his colleague who over the course of a few days discover that humans are being replaced by alien duplicates; each is a perfect biological clone of the person replaced, but devoid of empathy and humanity.read more
The plot involves a San Francisco health inspector and his colleague who over the course of a few days discover that humans are being replaced by alien duplicates; each is a perfect biological clone of the person replaced, but devoid of empathy and humanity.