A brief synopsis of the episode, courtesy of NBC, follows. Be forewarned, there are spoilers in the description. "Bombshell moves to Boston," according to press notes. "Ivy (Megan Hilty) faces trouble as Derek (Jack Davenport) finds himself drawn ever closer to Rebecca Duvall (special guest Uma Thurman), while Karen (Katharine McPhee) reaches a turning point -- she must choose between Dev (Raza Jaffrey) and the show. Eileen (Anjelica Huston) faces off against Julia (Debra Messing) over the possible return of Michael Swift (Will Chase). Sam (Leslie Odom, Jr.) brings Tom (Christian Borle) into the biggest battle of all -- family dinner."

As previously reported, the April 23 episode is titled " Publicity" and is described as such: "Karen (Katharine McPhee) finds herself seduced by the glamorous life of new BFF Rebecca Duvall (special guest star Uma Thurman) -- but can Rebecca be trusted? What will Karen's ascent mean to her relationship with Dev (Raza Jaffrey)? And will Rebecca drive Derek (Jack Davenport) insane? Eileen (Anjelica Huston) introduces new beau Nick (guest star Thorsten Kaye) to ex-husband Jerry (guest star Michael Cristofer), while Julia (Debra Messing) panics when her son Leo (Emory Cohen) goes missing." Megan Hilty and Christian Borle also star.

For more information visit www.nbc.com/smash.