‘The Bold And The Beautiful’ spoilers for July 4: Bill and Liam engage in an explosive fight

There’s going to be fireworks on the opening salvo of “The Bold and the Beautiful,” just in time for Fourth of July celebrations. On Monday, Liam (Scott Clifton) gets the shock of his life after catching Bill (Don Diamont) in an act of betrayal against Katie (Heather Tom). Having developed a close friendship with Katie, Liam berates his father and orders him to come clean. However, spoilers indicate that Bill won’t heed to his son’s advice and tells him to keep quiet as well.

Other “The Bold and the Beautiful” cast members who will also appear on the July 4 installment include Brooke (Katherine Kelly Lang), Steffy (Jacqueline MacInnes Wood), Wyatt (Darin Brooks) and Quinn (Rena Sofer).

Spoiler Alert! This article contains "The Bold and the Beautiful" spoilers. Read only if you want to know more about it.

TV Guide reports that on Monday’s episode of the “Bold and the Beautiful,” Steffy gets disappointed with her husband when Wyatt decides to meet Quinn. Left alone, Steffy recalls on a promise that Liam told her before. Speaking of Liam, he butts head with his father after he accidentally walks in on Bill in a compromising situation.

The show’s official YouTube channel posted a preview video for the July 4 episode. It features multiple scenes with Liam, Bill, Brooke and Katie.

On the first scene, Liam sees Bill kissing Brooke in the secret room. Liam wastes no time confronting his father about what he witnessed. “It’s bad enough for you to be unfaithful,” Liam says. “But you’re wife’s sister?”

Liam orders Bill to tell Katie the truth, but Bill refuses. “I’m not going to say anything, and neither are you,” Bill insists.

Katie also figures in the preview video as she pleads Liam to be honest. She asks him, “Is something going on? If you know anything, please tell me.”

"The Bold and the Beautiful" recap

Last week, Liam and Katie discuss about their respective relationships. Katie said that she doesn’t have any reason to believe that her sister and her husband would cause her pain again. She asked Liam to be honest with her, especially when it comes to Bill. Meanwhile, Brooke went over to Bill’s office to tell him that they can’t continue their relationship anymore. Bill asked her to make love with him for the last time, and Brooke was unable to resist the temptation. Unknown to them, Liam entered Bill’s office. He approached the secret room, thinking that his father is sleeping. He looked into the room just as Bill and Brooke were having their final kiss.

Click here to watch some episode previews from the official YouTube channel of “B&B.” Find out what happens next on “The Bold and the Beautiful,” which airs in the US from Monday to Friday on CBS. It also airs on Channel Ten in Australia.