Lockhart/Gardner will be fighting a case to dispute a will that bequeaths Alicia with millions of dollars in the upcoming 100th episode of The Good Wife

Alicia's (Juliana Margulies) new firm and Lockhart/Gardner locked horns over a case in the last episode and it looks like they are going to be battling it out in court again. In the next episode, The Decision Tree, Alicia will find out that one of her former clients left her a small fortune in his will. However, she will have to fight to claim her share of the money, as Lockhart/Gardner dispute the will by representing the deceased client's wife.

In the preview for episode 10 viewers get glimpses of the comical mayhem that ensues at the Florrick/Agos (Alicia's new firm) holiday party. When Alicia's husband Peter shows up at the party, his publicist Eli (Alan Cumming) is concerned about the governor's public image since the guests include some of Alicia's disreputable clients. 

Alicia is seen describing one of her guests as "a top drug dealer in Chicago" to someone at the party.

"Is that who I think it was," a concerned Peter asks Eli, who confirms his suspicion and asks him to "keep moving."

The 100th episode will feature a number of guest stars: Jordana Spiro as Detective Jenna Villette, John Noble as Alicia's former client Matthew Ashbaugh, Stockard Channing as Alicia's mother Veronica Loy, Nathan Lane as Clarke Hayden and Democratic Political Strategist Donna Brazile as herself.

The episode airs Dec. 1 on CBS.

Watch the preview here: