A veteran police sergeant (and new grandfather) tries to hide the debilitating effects of arthritis from his superior officers ... in particular, his son-in-law.

The mother of a young boy is a strong believer in a religious group called The Satan Fighters. When he becomes fatally ill, she believes he is being taken by his guardian angel to heaven and refuses medical treatment to allow this miracle to happen. Dr. Welby must do everything in his power to save the boy.

A young pilot who successfully undergoes treatment for bladder cancer becomes suicidal when his medical history prevents his employment and causes his girlfriend to shun him.

Dr. Welby meets with a young couple, the Brechts, who are dealing with infertility issues. The physician suggests several alternatives including artificial insemination but meet resistance from the husband.

Welby tries to get a high school student, who was raped by his pedophile teacher, to reveal his assailant.

Kiley is frustrated by a resident at Lang Memorial's Family Practices Clinic who is prone to making rash and non-medical diagnoses.

Because of her religious beliefs, a mother refuses to get medical help for her seriously ill son even though the inattention may lead to his death.

Life outside the ring - permanently - is not easy for Danny Williams, a promising young fighter who shields the fact that he is epileptic from his wife. Williams struggles with having to adjust to a new life, despite the best efforts of Welby, Kiley and Williams' wife, Laurie.

A doctor who has spent years in medical research has trouble adjusting to family medicine because of a lack of interpersonal skills and because he cannot deal with pain in other people.

A young couple has a daughter who has unexplained attacks and keeps her hidden. Welby and Kiley diagnose her as having tortion dystonia, a disease similar to muscular dystrophy. The surgical process to releave her symptoms is shown.

Dr. Welby's patient dies in the night and her daughter agrees, under grieving duress, to a $5000 funeral. In the meantime, Dr. Kiley's long-time friend develops problems with his kidneys, and is unable to attend the opening of his art exhibit. Not to worry, Marcus Welby, M.D. is on both cases!

Dr. Welby treats a young girl who almost drowned. His biggest challenge is getting through to the girl's mother who adamantly will not let her hearing-impaired daughter be seen by a specialist.

A career woman, delighted to be pregnant at last, joins Consuelo's medical care group for pregnant women.

Welby is concerned with a young resident shows more concern with the clinical aspects of his cases than with the patients themselves.

Kiley's medical and personal lives come into conflict after he takes Susan Davis (a former patient of his) out to dinner. Susan has been harassed by her ex-boyfriend, Wayne, who stalks her undeterred as Kiley repeatedly warns him off. On the night of Kiley's dinner date, Wayne breaks into Susan's apartment and attempts to rape her. Kiley runs in and scares Wayne off, then goes after him. As Kiley is going after Wayne (to get a license and car description so he can contact the police), Wayne loses control of his car and crashes into a concrete barrier, seriously ...

Kiley finds himself fighting for his medical career after Wayne Trent - the man who was stalking his ex-girlfriend, who was now dating Kiley - files a medical malpractice lawsuit against him, all in the aftermath of a car chase and subsequent accident in which Wayne was seriously injured.

Because his wife has chronic heart disease, a financial manager has a one-night stand with a model that gives him syphilis. The illness comes out in a routine physical and the results are both professionally and personally devastating.

A rising tennis star's career may be threatened by thyroid cancer caused from radiation treatment she received as a child.

A young man returns home after several years abroad to visit a high school friend only to find his him seriously ill and in a severe depression. In helping his friend, the man finds he has personal problems of his own to deal with.

Kiley becomes a mentor-of-sorts to a teen-aged boy named Jake, who - thanks to a disorder caused by undetected minimal brain damage - has poor social skills and does poorly in school.

Two women have very different reactions to a diagnosis of breast cancer.

A politician's wife, suffering from hypertension, has her health endangered when her husband finds himself embroiled in a kickback scandal.

A young teenage violinist appears to have a disease that only occurs in adolescents and Welby feels that he may be misdiagnosing because he is in shock over the death of an old friend earlier in the day.

A man's gambling endangers his daughter's health.