Asterion is the seventh episode of Season 2 of Masters of Sex.
Bill cuts sexual ties with Virginia after finding out that she was having relationships with other people, and a surprise visit by his mother, who offers to give him money to pay for his new clinic, doesn't help.
Part one of this episode takes place on October 15, 1958.
Part two takes place on September 2, 1959.
Part three takes place on October 11, 1960.