Bio-anthropologist Dr. Sloan Parker makes a startling discovery: a new species..... of humans. The drama begins as Sloan is working with her mentor, Dr. Ann Coulter, on a criminal case involving a highly intelligent and ruthless serial killer, Randall Lynch. Hours after revealing to Sloan that "there's a genetic anomaly" in the killer's blood, her teacher is found murdered. Undaunted, Soan continues the research with the help of a colleague, Dr. Ed Tate. She learns that the killer's DNA differs from that of other humans-and that he's not alone. It seems that a new breed resembling Homo sapiens has evolved, and it intends to be the dominant species.