Donovan will guest star in two episodes of the third season of #MASTERSOFSEX premiering July 12 at 10 p.m. ET/PT on Showtime. Season three of the series is set in 1966 when the famed duo Masters and Johnson are dealing with the glare of the national spotlight as their sex study is finally unveiled. Masters and Johnson’s work will have a profound impact on contemporary relationships, especially their own evolving three-way “marriage” with Masters’ wife Libby (Caitlin FitzGerald).