Bloodline plot
"The line between love and death is the bloodline."
Elizabeth Roffe (Audrey Hepburn) is a strong, intelligent woman who inherits her family's pharmaceutical empire when her father is killed in a mysterious accident. The investigation into her father's death uncovers a murder. The suspects include all of Elizabeth's closest advisers and relatives, including her new husband. When she refuses to sell the company, her life is in danger. Her search for the truth turns into an international pursuit - who is trying to kill her and take over her company? Soon, Elizabeth learns that trusting the wrong man can be a deadly mistake.