Things will heat up on "The Good Wife" when the CBS series returns from its midwinter recess later this month.

According to TVLine, fans can expect Zach Florrick (Graham Phillips) to return in the upcoming episode, "Iowa," in order to help his dad's presidential campaign. In a preview photo, Zach appears to be at a campaign event with his mother, Alicia Florrick (Julianna Margulies), and Eli (Alan Cumming). Zach's girlfriend is also seen in the picture holding a "Peter Florrick For President" sign while wearing a Georgetown hoodie.

Meanwhile, a promo video teasing the midseason premiere shows Alicia unleashing a fit of rage upon Eli after he admitted to deleting a voicemail of Will professing his love for her six years ago. Will also told her that he would do anything to be with her. However, Eli erased the message it in order to prevent Alicia's love affair from interfering with her husband's campaign at the time. As a result, Alicia never received the voicemail before Will suffered from a tragic death.

In the video, its apparent that Alicia does not take Eli's confession very well. The usually demure lawyer is seen throwing dishes at his head in a fit of rage.

When asked what prompted Eli's confession, executive producers Robert and Michelle King told Entertainment Weekly that he was still feeling very emotional about his breakup with Courtney Paige and guilty that Alicia's potential new love interest, Jason Crouse, has been taken away from her.

"Eli admits it now for a few reasons: He's particularly vulnerable because of his pain over Courtney (Vanessa Williams) leaving, and the reason for her leaving ... work over love," said the showrunners.

"But he also feels guilty about his involvement in manipulating Alicia out of happiness again by maneuvering Jason (Jeffrey Dean Morgan) away from her. He realizes he's doing the same thing now that he did back at the end of the first season. He cares for Alicia now, and wants her to be happy. He confesses in order to relieve his guilt, but also to push Alicia to not give up her chance at happiness," they added.

Episode 11 of Season 7 of "The Good Wife," "Iowa," airs on Sunday, Jan. 10 at 9 p.m. ET on CBS.

Watch a preview video below.