Uma Thurman Uma Thurman

"Bombshell," the Marilyn Monroe musical at the heart of NBC's Smash, finally opens this Monday for a test run in Boston — and here's a first look at the opening number from the May 7 episode!

"Bombshell" will face a major crisis when a heath issue hits Uma Thurman's diva-licious Rebecca Duvall (think skull and crossbones). Then, when the first preview fails to impress, Tom (Christian Borle) and Julia (Debra Messing) scramble to fix the musical. Meanwhile, Dev (Raza Jaffrey) tries to repair his relationship with Karen (Katharine McPhee), but info about Ivy (Megan Hilty) could do the couple in for good. Enjoy!

Subscribe to TV Guide Magazine now!