Credit: Angela Weiss/Getty Images; Jesse Grant/

On Tuesday's part-two of the Real Housewives of Beverly Hills reunion, Lisa VanderPump burst into tears -- and her husband Ken Todd spoke angrily -- alluding to their bitter falling out with Cedric Martinez.

The couple opens up exclusively in the new Us Weekly (out now) about just what happened with their former "permanent housemate" Martinez.

After living at the family's sprawling Beverly Hills mansion rent-free for over a year and a half, Martinez snapped when VanderPump and Todd confronted him about his laziness.

Explains Todd: "[Cedric] said, 'I'm not asking for money, but I haven't got any, and I've been offered to sell my story to magazines. I can say anything I want."

Even worse? Todd tells Us that Martinez chillingly suggested during the spat that he could get violent. "He said, 'The last time I was this angry, I stabbed my father,'" says Todd, who says he filed a police report after the scary chat.

"I will sue if he sells any stories about me," a heartbroken VanderPump tells Us. "I feel absolutely betrayed."

(Denying the couple's claims, Martinez tells Us, "This is what they do when they get bored.")

For much more of our exclusive sit-down -- how Martinez "wanted to be the seventh housewife" and more of his rebuttal -- pick up the new issue of Us Weekly, on stands now!