After Leigh Conroy joins the cast of "Bombshell," Tom finds himself struggling to diffuse the years of tension between her and Ivy. Jimmy and Karen's connection is threatened by both Ana's newfound success and an unexpected visitor. Derek learns more about Jimmy's past just as the public sees their first piece of "Hit List."

"The Phenomenon" is the twenty ninth episode of the American television series Smash. It was written by Jordon Nardino and executive producer and showrunner Joshua Safran and directed by Roxann Dawson. The episode premiered on NBC on May 4, 2013, the fourteenth episode of Season 2.