nick wilkins life. he was diagnosed with leukemia at age 4 and his doctors had run out of options but after using this new immunotherapy, wilkins is now cancer free. here s how it works. doctors take a patient s own cells and modify them so that they target and kill the cancer cells. cnn s dr. sanjay gupta will have more on this and other medical stories in the next hour on sanjay gupta m.d. here he is with a preview, sanjay? fred, it s a statistic that i talk about all the time. someone dies every 19 minutes in this country from an accidental prescription drug overdose and most of these deaths, fred, involve painkillers, so we re going to be exposing one prominent physician who some say was writing these prescriptions with reckless abandon, we got that ahead. thank you so much, sanjay. america s got talent it s a reality show staple.