Lois Nettleton plays a deranged woman who kidnaps a baby believing the child is her own. Mayor Alcala (Anthony Quinn) becomes involved because the baby was left in the care of his secretary (Mala Powers). Nettleton, a healthy, normal secretary who one day just picks up a baby, being cared for by Marian (Mala Powers), and takes it home as her own. Seems she's normal in every area but the one involving her own baby, which died at birth, a fact she has never been able to accept. It'll hold your interest.