Teenager Elsie Kerr is hospitalized with a high fever after being found raped and beaten. When eminent bacteriologist Sir Marcus Levin is asked to consult on the case, Elsie accuses him of the crime, pointing at him and screaming "Devil Daddy " Then things really start to get weird: Elsie ages eighty years in a matter of hours, and Sir Marcus finds himself racing to stop whatever killed her from spreading while at the same time trying to clear...