Lynn Poole offers a definition of cancer in this third program in the series. Dr. Samuel P. Asper, Jr. describes the thyroid gland and the characteristics of hyperthyroidism and hypothyroidism. William S. Halsted's operation is still used for surgery on the thyroid to remove a goiter or cancer, and both the incision and the gland are shown in photos. A recovered surgery patient, operated on by H. William Scott of Vanderbilt University Medical Center, is shown on film. Radiation of the thyroid and radioactive iodine taken internally are considered treatments rather than cures. Additional films show Dr. George O. Gey's cancer cell labs at Johns Hopkins University, Dr. Frederik B. Bang using the electron microscope to detect cervical cancer, and the U. S. Public Health Service's National Cancer Institute's use of mice in cancer research and treatment. Dr. Isaac Berenblum's book, "Man Against Cancer," the basis of this series, is promoted. Mr. Poole reminds the audience once again, early detection is the key to a cure.

In this second program of a three-part series on cancer, based on the book by L. Berenblum, Dr. Richard Te Linde, of the Johns Hopkins Medical School and Hospital, discusses cancer of the cervix. Dr. Te Linde notes that although three-quarters of women afflicted with this cancer die from it, it is curable if treated in its early stages. He answers commonly asked questions about the development of cervical cancer and describes typical symptoms. He cites Dr. Norman Miller's study on how the loss of time in treating cervical cancer can make a difference in curability. Dr. Te Linde draws a uterus, cervix, and vagina and shows how a speculum, biopsy forceps, and a spatula are used to detect early cases. Drs. Trout and Papanicolaou's pap smear test can reveal both normal and malignant cells from the cervix. Dr. Telinde shows several slides of cervical cancer cells in various stages of malignancy and says that at the pre-invasive stage, this cancer can be cured with either surgery (hysterectomy) or irradiation.

Early detection is stressed throughout this series on cancer. In this program, Dr. Warfield M. Firor shows cross sectional slides of cancerous breasts, explains the nature of the disease in female breasts, and discusses research being done in this field. He guides the viewers through a film of breast surgery as it is being performed and discusses William S. Halsted's 1890 surgical procedure. Breast cancer survivors demonstrate their range of motion and muscle tone. For cancer recurrence, Dr. Firor recommends excision of the growth, hormone therapy, or x-ray therapy. He also addresses male cancer of the breast. The program concludes with a brief description of three cancer experiments being conducted by Johns Hopkins University researchers.