Harry Hamlin claims he has no idea what big secret Kim Richards is referring to on The Real Housewives of Beverly Hills. Credit: Michael Tran/FilmMagic; Jim Spellman/WireImage

Even Harry wants to know #WhatDidHarryDo? Harry Hamlin has been making headlines ever since the explosive fight between Lisa Rinna and Kim Richards in Amsterdam on The Real Housewives of Beverly Hills

In the wine glass-throwing episode, Richards, 50, claimed she would reveal a massive secret about Rinna's husband if she continued to question her sobriety. The threat caused the Melrose Place alum, 51, to go off, lunging for Richards and shattering a wine glass on the table. 

At the Raising The Bar to End Parkinson’s event in L.A.'s Sherman Oaks nabe on Saturday, March 7, Hamlin spoke about his wife coming to his defense.

"She and I would equally defend each other’s honor," he told Us Weekly. "I was actually proud of her. I mean, look — you are getting your back up against a wall with something like that. What do you expect you know in the long run? But every time I see it, I go, 'You go girl!'"

Though Hamlin, 63, was hesitant about his wife joining the show, the actor is ultimately pleased with her work on the Bravo reality series. 

"Well, you know, I am [proud] because she’s doing a magnificent job," he said. "I think she’s bringing some class to a show that is kind of a reflection of who we are today. So in some sense it is art in that respect. I think she’s doing an extraordinary job."

As for the big secret Richards is threatening to expose? Hamlin claims he would like to know just as much as the rest of us. 

"There is a hashtag #WhatDidHarryDo? out there so maybe someone will tell me at some point, and I hope it was good," he joked. 

Real Housewives of Beverly Hills airs Tuesdays at 9 p.m. ET on Bravo.