Henrietta Lacks was a sharecropper from the deep South who developed cervical cancer in the 1950s. Her very aggressive tumor was harvested and the cells were cultured, revealing themselves to be "immortal" -- meaning they did not die in a glass container and were able to continue to replicate. Thus the first immortal human cell line was born. "The Way of All Flesh" is an Adam Curtiss documentary about HeLa cells -- used throughout the scientific world today and a component of modern vaccines. One woman's cancer has found its way into eternity.