When does Masters of Sex return?

The series is set in the 1950s through the late 1960s. It is loosely based on Thomas Maier's biography Masters of Sex. The series was canceled by Showtime on November 30, 2016, after four seasons. It was nominated for a Golden Globe Award for Best Drama Series in 2013.
The series explores the research and the relationship between William Masters and Virginia Johnson, two pioneering researchers of human sexuality at Washington University in St. Louis, Missouri. In real life, Masters and Johnson each have two children, but in the series, they have three children each.