Christian Borle is on his way to Showtime.

The actor, most recently seen as a lawyer on The Good Wife Season 5, will recur on Masters of Sex Season 2 as Frank, the brother of Michael Sheen's William Masters.

Borle is also known for his roles on Smash, NBC's production of The Sound of Music and as a Broadway veteran; his portrayal in Peter and the Starcatcher won him Tony Award in 2012. 

Other Season 2 guest stars will include:

• Betsy Brandt
• Sarah Silverman
• Keke Palmer
• Courtney B. Vance
• Rene Auberjonois

Masters of Sex Season 2 kicks off on July 13 at 10/9c.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.