A race against the clock thriller about a police inspectors frantic search to locate three blood donors each able to donate one pint of a rare type of blood to save the life of a young girl suffering from leukaemia. The hospital’s chief surgeon Dr. Carter (Anthony Steel), aided by Scotland Yard’s Inspector Lane (Jack Warner), launch a nationwide hunt to save the young girls life. They come into contact with three potential donors all from very different backgrounds who must be persuaded to make a donation despite their reservations. (official distributor synopsis)