The drama, which stars William H. Macy as the patriarch of a struggling Chicago family and Emmy Rossum as his eldest child, returns Jan. 8, but we'll have to wait until the twelfth episode of the season to meet Elfman's character.
The actress plays Jill, "a woman with a dangerous past and an awkward present," according to the network.
When the new season of the show begins, the Gallagher clan is sweltering through a hot Chicago summer and Fiona, Rossum's character, is working at a trendy nightclub while her siblings Carl (Ethan Cutkoski) and Debbie (Emma Kenny) run a day-care center out of the family home. (That sounds like a terrific idea for the chaotic Gallagher household, right? More people on the premises?)
Meanwhile, their neighbor, Sheila (Joan Cusack) is still letting the family's irresponsible patriarch, Frank, live with her, and Lip (Jeremy Allen White) and Ian (Cameron Monaghan) are pondering whether college is an option.
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