‘The Bold And The Beautiful' spoilers for April 5: Katie wonders if Brooke wants to sabotage her marriage with Bill

On Tuesday, “The Bold and the Beautiful” episode revisits the continuing feud between sisters Katie (Heather Tom) and Brooke (Katherine Kelly Lang). So far, Brooke is the only person who knows about her sister’s secret – that Katie still hasn’t stopped her drinking habit. Brooke is concerned about her sister, but Katie says revealing her secret would mean her marriage with Bill (Don Diamont) would be over.

Other “The Bold and the Beautiful” cast members who will also appear in the April 5 installment include Quinn (Rena Sofer), Liam (Scott Clifton), Steffy (Jacqueline MacInnes Wood) 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 Tuesday’s episode of the “Bold and the Beautiful,” Liam’s continuous grilling causes Quinn to blow her top, which surprises Liam. Meanwhile, Katie gets caught red-handed again, so she takes advantage of Brooke’s guilt feeling and reminds her of their agreement.

The show’s official YouTube channel posted a preview video for the April 5 episode. It features multiple scenes with Brooke, Katie, Quinn, Wyatt and Steffy.

Brooke opens the scene as she reprimands Katie. Brooke asks her, “How long do you think you could keep this lie up?” Katie, on the other hand, issues a warning to her sister. “If you say something to Bill, you would sabotage our marriage,” Katie says. “Is that what you want?”

On another part of the video, Quinn is seen losing her patience with Liam. “You’re never going to find any answers that make us any happier than we are right now,” she yells at him.

The newlyweds also appear on the trailer, as they enjoy their first night together. “I have a wife, and God, do I love her,” Wyatt gushes, which sends Steffy into a fit of giggles.

"The Bold and the Beautiful" recap

Previous episodes have shown that Brooke discovered what Katie is hiding – that she hasn’t stopped drinking despite what she told everyone. Katie asked Brooke to promise not to spill her secret to Bill. On Monday, Katie told Bill that she had fun without alcohol. Bill was concerned that the champagne toast tempted Katie to drink again, but she assured him that she has everything under control. Katie said she is into self-medication, but will overcome her problems soon especially with Bill’s help. Later, Katie called Brooke and told her that she didn’t drink at the wedding reception. They got into an argument because Brooke said Katie should have told Bill about the truth. Katie pleaded Brooke to protect her marriage by keeping her secret.

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.