Medical thriller about a fertility counselor who goes on a killing spree of barren women in the warped belief that this "act of mercy" will save them -- her "sisters" -- from a life of suffering. Although she hides her crimes by making the killings appear to be accidents or suicides, she is uncovered by a suspicious and persistent fertility clinic RN and her reluctant-but-efficient deputy sheriff roommate. In the process, the female nurse/deputy amateur sleuths also expose unethical and illegal practices by the fertility clinic's MD founder-owner-operator.