Diagnostic detective work is called for in the puzzling case of a young woman who underwent apparently successful heart surgery. After steady progress, she suffers an onset of unaccountable, increasingly severe seizures. 

The parents of a teenage boy with leukemia prevent Dr. Welby from informing him of his diagnosis.

Dr. Welby, wishes to hospitalize Scott Behrman, who has given up LDS but suffers from recurrences of the effects of the drug. Scott returns home after a long absence, and bursts into Dr. Welby's office while suffering a violent "acid flash." . After the attack, Dr. Welby wants have him hospitalized. However, Max Behrman, Scott's father, who is willing to be separated from his son again, opposes the plan. He believes that if Scott pursues a responsible life, working in the family business, the attacks will not recur.  

In her recurring role as Myra Sherwood, Ann Baxter, with whom Dr. Welby is in love, takes a pregnant, unmarried "flower child," Tracy Clifford, into her home. Dr. Welby, who is treating Tracy for mononucleosis, warns Myra against deep emotional involvement with the girl. Myra, however, whose own daughter would have been Tracy's age had she lived, makes plans to maintain Tracy has her own child--when it is born--indefinitely.