The Secret of Dr. Kildare

Jimmy Kildare's impending nuptials are jeopardized by a diagnosis of possible epilepsy in his fiancee's brother.

A variety of predicaments arise to distract Dr. Kildare from his wedding to Nurse Mary Lamont.

A young doctor gives up big-city success to help his father set up a small-town clinic.

Dr. Kildare treats and falls for impoverished ex-con Janet Healy, widow of a bank robber, who can't find her baby. Later she helps Kildare sew up gangster Hanlon in a tavern back room. Kildare pursues Janet and enlists Hanlon to help her; the gangster's solution, not surprisingly, is violent.

A medical school graduate takes an internship at a big city hospital, only to be subjected to a rigorous (and sometimes embarrassing) testing of his knowledge by the hospital's top dog, Dr. Leonard Gillespie.

Following an argument with his young protege, the curmudgeonly Dr. Gillespie dumps Jimmy Kildare in a street clinic, hoping to teach him a lesson. While working there Kildare meets pretty nurse Mary Lamont, and ends up treating a hoodlum with a gunshot wound. He purposely fails to write a report on it, and soon finds himself in a heap of trouble. Who else would come to his rescue but good old Dr. Gillespie?

Kildare tries brain surgery, advised by Dr. Gillespie, and faces a rival for nurse Lamont.

An ice skater sues Kildare (Lew Ayres) for malpractice after his roadside first aid leaves her paralyzed.

Dr. Gillespie supports Kildare's crusade against their hospital's deal with a rival hospital.

A young nurse, Alma, is put in charge of Elisabeth Vogler: an actress who is seemingly healthy in all respects, but will not talk. As they spend time together, Alma speaks to Elisabeth constantly, never receiving any answer.

Despite their social differences Luise, called Pünktchen, a girl from rich parentage befriends Anton, a boy who has to earn his own money in order to afford life for his sick mother and himself. Together they undergo different adventures, even preventing a theft in Pünktchens home