Katherine Kelly Lang and Heather Tom
"The Bold and the Beautiful" star Katherine Kelly Lang poses with her on-screen sister Heather Tom. Instagram/bbheathertom

The Bold and the Beautiful” closes the week with an episode that deals with ugly sibling rivalries, epic confrontations and complicated love battles. On Friday’s run, all hell breaks loose when Katie (Heather Tom) squares off with Brooke (Katherine Kelly Lang) after finding out about the affair. Katie’s discovery triggers a painful trip down memory lane, as she flashes back to all the hurt that her sister has caused.

Meanwhile, Liam realises that even ideal marriages such as that of his dad and Katie’s can be destroyed. This encourages him to pursue Steffy (Jacqueline MacInnes Wood) again, and this time, he’s determined to win. Other “The Bold and the Beautiful” cast members who will also appear on the July 8 installment include Bill (Don Diamont) and Wyatt (Darin Brooks).

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 Friday’s episode of the “Bold and the Beautiful,” Liam finds a renewed sense of confidence brought about by his Brooke-Bill exposé. He channels this self-confidence by telling Steffy how he still feels about her. Meanwhile, Katie lashes at her sister about their past, present and future issues.

Spoilers indicate that in this round of the Spencer brothers’ bout, Liam will pull out all the stops to make sure he’d get the ultimate prize. Fans wonder how Wyatt would react and how he would fight for his wife. Liam also may be facing another battle – his dad is not exactly in a forgiving mood after his affair with Brooke was revealed to everyone. Bill even told Liam that there are possible repercussions of his actions.

"The Bold and the Beautiful" recap

On Thursday, Bill went over to Brooke’s house to tell her that Katie overheard him talking on the phone and mentioned Brooke’s name. Bill said Katie exited the party after that. Brooke said that maybe Liam was right – maybe it’s time to come clean with Katie. Surprisingly, Bill agreed. He said they should tell Katie so he can be with Brooke. She then received a call from Liam – Katie’s in a state. Brooke said she’ll rush over there, then told Bill that she’ll tell her sister everything.

Meanwhile, Liam was not exaggerating about Katie – she was absolutely losing it. When Brooke arrived, Katie begged her to tell her there is nothing going on with Bill. “I'm sorry,” Brooke whispered. Katie gasped, “Oh God...you and my husband.”

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.