Katharine McPhee Signs on for Smash
![](https://tv-fanatic-res.cloudinary.com/iu/cs_srgb,d_tv-fanatic-placeholder-square.png,f_auto,fl_strip_profile.lossy,q_auto:420/v1501812088/user/tv-fanatic-staff)
Smash has signed another fairly big name.
A week after Debra Messing joined the upcoming NBC musical, the series has landed a former American Idol finalist. Katharine McPhee, who has guest-starred on CSI: NY and Community, has joined the cast in an unannounced role.
Produced by Steven Spielberg, Smash will debut in the fall.
Clearly inspired by Glee, it will center around a cast of characters who come together to perform a Broadway musical based on the life of Marilyn Monroe.