Common wisdom states you should avoid sleeping with your coworkers, but if you're both renegade researchers in the field of sexuality, well, things are gonna get pretty confusing.

The second season of Showtime's "Masters of Sex" is almost upon us, and if you haven't been watching this smart and sexy show, this teasing trailer might do the trick. Lizzy Caplan and Michael Sheen star as researchers Virginia Johnson and William Masters, and as you can see from this tidbit, it seems they've become their own best test subjects. Unfortunately, it's not as easy as they'd like to believe to divest your heart from your body, as we can see from these less-than-clinical trysts between the two scientists. And this is just the tip of the iceberg!

Although HBO's "Game of Thrones" and "True Blood" still dominate and saturate the media, Showtime's "Masters of Sex" and "Penny Dreadful" are definitely snagging some eyeballs.

The second season of "Masters of Sex" kicks off Sunday, July 13, at 10 PM EST.