They've so far won the most legs of season 25 on The Amazing Race, but the challenges they face on the newest legs could put the Dentists in jeopardy of having to use their Save.

Could The Dentists' Be The Winners Of Season 25?

"We're in big trouble," Jim says in a preview clip for the Friday, Nov. 21 episode, Hot Sexy Knights.

It's unclear where the couple, who will begin the leg in first, will run into trouble and start worrying about having to use the save they won at the end of the first leg-but the tasks they must complete this time around could prove to be a bit more daunting than others have seemed.

Teams Encounter 'Barely Legal' Tasks In Italy

During the leg, teams will have several tasks, including a difficult roadblock which could include rappelling from a cliff and trying to grab flags off of a distended branch without falling into the water below-a task that will prove difficult not only for the dentists, but other teams, including wrestlers Brooke and Robby and college sweethearts Tim and Te Jay as well.

One person who may not appear to have trouble with the task though is one-armed surfer Bethany, who may shock everyone with her ability to quickly complete the task.

"Bethany is like the terminator," Brooke observes in the clip.

And while the other teams may express shock at her abilities to complete the task so well, her team mate and husband, Adam, will show just how proud of her he is.

"I was welling up with pride," he says in the clip.

The Amazing Race airs Fridays at 8 p.m. on CBS.

Tags: The Amazing Race CBS Reality TV