The last season of the hit Bravo reality TV series "Vanderpump Rules" ended on a tense note with various cast members facing off against each other. But reality star and restaurateur Lisa Vanderpump, who always serves at the voice of reason, drops little truth bombs during the upcoming three-part reunion special and goes head to head with her former employee, Stassi Schroeder.

"Vanderpump Rules" focuses on the intricate relationships and conflicts between Vanderpump's employees at her super posh Hollywood restaurant SUR, and the claws came out during the explosive season finale. Lala Kent shoved Kristen Doute as the women fought over James Kennedy, Jax Taylor confronted Kennedy for the way he speaks to women, and Schroeder crashed the engagement party Vanderpump organized for Katie Maloney and Tom Schwartz.

In a sneak peek for the upcoming first part of reunion special, the cast members show up to the studio to film the Season 4 reunion special and just like Vanderpump predicts, certain feuds will reignite once everyone takes the stage.

"You know it's going to kick off at some point," Vanderpump warns the crew.

Taylor and Kennedy are the first to face off, but because Taylor is still on parole from his arrest in Hawaii, he refrains from getting physical with Kennedy.

"It's going to take every bone in my body not to go after that guy," Taylor says.

"I'm waiting for it," Kennedy taunts, then threatens Taylor. "I'll punch you in your fat throat, mate."

Backstage, Vanderpump checks in on Kent, who is sure that everyone on the cast hates her.

"You look scared," Vanderpump tells Kent.

"I am scared," she admits. "I don't want to get ganged up on."

But Schroeder ends up clashing with everyone. She attempts to come after Vanderpump, even though Vanderpump was the one who stepped in and paid off Schroeder's ex when he threated to release their sex tape. But "The Real Housewives of Beverly Hills" star quickly puts Schroeder in her place.

"You and Ken had gone to my parents and told us, 'You owe me $900,'" Schroeder tells Vanderpump and Vanderpump sets the record straight.

"Really?" she exclaims, "I was saving your a--!"

Watch the full sneak peek below and be sure to catch part one of the three-part "Vanderpump Rules" reunion special, airing Monday March 21 at 9 p.m. on Bravo.