Michael Sheen plays Dr. William Masters, the senior member of a research team that conducted pioneering studies for more than three decades into the physiology of human sexuality.
Delia Ephron is a novelist and playwright. Her essays have been published in The New York Times, O, Vogue and the Huffington Post. Her older sister, writer Nora Ephron, died in June 2012.
Elena Seibert/Penguin Group