Dr. Sanjay Gupta reports on efforts to “tame the beast”---cancer---at Houston's M.D. Anderson Cancer Center. The episode includes comments from patients and staffers, and spotlights the struggles of five patients, including 6-year-old Allie Krowski, who is currently cancer-free after battling Ewing's sarcoma; and brain-tumor patient Allan Lusky, who says of cancer, “you get rid of it two ways: one, if they find a cure; and two is when you die.”