The study is out, and things are getting more and more complicated for Bill Masters (Michael Sheen) and Virginia Johnson (Lizzy Caplan) in Masters of Sex Season 3.

Showtime has released the first teaser trailer for the new season, offering up a look at how the duo will deal with new challenges, and a quick first glimpse of Will Gardner Josh Charles in his new role. Charles will play Daniel, a businessman looking to bottle the "smell of sex," and from the trailer he looks to be trying to negotiate with (or convince?) Masters and Johnson. What could they possibly have hesitations about?

The trailer also promises some interesting developments as the show's metaphorical three-way marriage with Masters' wife Libby looks to become more of a reality. Caitlin Fitzgerald even finds herself part of the action with her co-stars in the show's new Twister-themed key art, with the tagline "Come Together" (quite the double endtendre).

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What do you think of the trailer?

Masters of Sex moves into 1966 when it returns, as Masters and Johnson find themselves in the national spotlight when their controversial sex study is finally unveiled.

Masters of Sex returns July 12 at 10/9c on Showtime.

(Full disclosure: is owned by CBS, one of Showtime's parent companies)