After Leigh Conroy (guest star Bernadette Peters) joins the cast of "Bombshell," Tom (Christian Borle) finds himself struggling to diffuse the years of tension between her and Ivy (Megan Hilty). Jimmy (Jeremy Jordan) and Karen's (Katharine McPhee) connection is threatened by both Ana's (Krysta Rodriguez) newfound success and an unexpected visitor. Derek (Jack Davenport) learns more about Jimmy's past just as the public sees their first piece of "Hit List."