‘The Bold And The Beautiful’ spoilers for Dec. 19: Katie fears for Liam’s life; Ridge accidentally sees Quinn naked

Big revelations and an unexpected turn of events hound the upcoming episode of “The Bold and Beautiful” (“B&B”) as it opens the week. On Monday, Katie (Heather Tom) shares her suspicions with her sister: Quinn (Rena Sofer) is threatening to harm Liam (Scott Clifton) to ruin his relationship with Steffy (Jacqueline MacInnes Wood).

Meanwhile, Ridge (Thorsten Kaye) continues to hate Quinn, but he’ll be surprised at his own reaction when he sees her nude body. Other “The Bold and the Beautiful” characters who will figure prominently on the Dec. 19 installment include Eric (John McCook), Brooke (Katherine Kelly Lang) 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.

We Love Soaps reports that on Monday’s episode of “B&B,” Ridge gets a glimpse of Quinn’s side that he has never seen before. Quinn, on the other hand, confides in on Eric about her fears. Meanwhile, Katie and Brooke make an attempt to understand Quinn’s intentions.

The show’s official YouTube channel posted a preview video for the Dec. 19 episode [watch below]. It features multiple scenes with Katie, Brooke, Quinn, Eric and Ridge.

In the first scene, Katie wonders to Brooke, “Was she threatening to harm Liam, or was she just saying that she’s going to try to break him and Steffy up so Wyatt can move in?” Later, Katie also shares her plans with Brooke. “I’ve got to let Quinn think that I’m her champion,” Katie says. “We’re never going to forget just how dangerous that woman is.”

Elsewhere, Ridge tells someone, “Maybe she’s more unhinged than we give her credit for.” Quinn also figures in the clip as she admits to Eric, “Do you know that sometimes, when I wake up in the morning, I’m afraid to look over at your side of the bed?”

Source: YouTube/Bold and Beautiful

"The Bold and the Beautiful" recap

Last week, Liam was trying to convince Eric that Quinn is manipulating him, but the family patriarch countered that Liam’s opinion is biased. Liam argued that he’s a living proof of what Quinn is capable of doing. Eric told him that people can change, and reiterated that he’s loyal to Quinn and Wyatt. Liam was completely shocked when he realised that Eric was part of the plan to bring Steffy back with Wyatt. Eric said that he’s going to ask Steffy to move into the mansion, where Wyatt lives. Eric said that Steffy’s future is without Liam.

Elsewhere, Katie and Brooke talked about Quinn. Brooke advised her to tell Eric about what happened. Katie agreed and headed to the mansion, where she saw Quinn and Liam embroiled in a heated argument. Quinn told Liam, “Enjoy your time with Steffy, because these days are going to be your last.” Quinn’s threat to Liam was caught in video -- Katie whipped up her phone to record the conversation.

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.