'Masters of Sex' Adds 'Smash's' Christian Borle

Christian Borle Headshot - P 2014
Courtesy of Showtime

Christian Borle Headshot - P 2014

Christian Borle is joining the cast of Showtime's Masters of Sex.

The Smash alum is the latest actor to join a long list of recurring guest stars for season two, which already includes Betsy Brandt, Sarah Silverman and Keke Palmer. Borle will recur as Frank Masters, William Masters' (Michael Sheen) brother.

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The Tony-winning actor is known for his work onstage and onscreen. In addition to appearing in Broadway productions such as Spamalot, Legally Blonde and Peter and the Starcatcher (for which he earned his Tony in 2012), Borle has starred in TV's Smash, The Sound of Music Live! and appeared on The Good Wife.

Masters of Sex also stars Lizzy Caplan, Caitlin FitzGerald, Teddy Sears, Helene Yorke, Beau Bridges and Allison Janney.

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The hourlong drama chronicles real-life sex researchers William Masters and Virginia Johnson's (Caplan) journey from their research in a Missouri hospital to their public debut on the cover of Time magazine.

At a Television Academy panel in April, executive producer Michelle Ashford talked to The Hollywood Reporter about the practical challenges of filming with the new castmembers: "Because we've hired the most fantastic cast in the world, they are all really busy so getting them in one place at the same time has been crazy."

Season two of Masters of Sex premieres Sunday, July 13, at 10 p.m. on Showtime.