Michael Jackson had just two doctors in the final months of his life

Entering the world of Dr Arnold Klein is an extraordinary experience.

That it happened in the slightly unreal setting of the glitzy mansion where they film 'The Real Housewives of Beverly Hills' was somehow fitting.

Dr Klein has been dermatologist to the stars for decades, medical royalty in a place where the search for youth and beauty is part of everyday life.

He can claim friendships with everyone from Elizabeth Taylor down - but it is his relationship with the star he calls his best friend that has put his reputation in the spotlight now.

His treatment of Michael Jackson has loomed over the trial of Dr Conrad Murray as the defence team have tried to push some of the blame for the pop superstar's drug issues on to Dr Klein.

He was not called to give evidence so agreed to speak to Sky News to defend himself against the allegations made in court.

And that's how we ended up under the chandeliers in the rarified atmosphere of a Beverly Park mansion on a chilly Friday evening.

Heiress and reality TV star Adrienne Maloof-Nassif and her plastic surgeon husband Paul Nassif were throwing a red-carpet party to mark the opening of Dr Klein's new offices.

The guest list included the likes Charlie Sheen, who married in the house three years ago, Warren Beatty and the Earl and Countess Spencer.

It is evident Dr Klein has some powerful and influential friends and clients - and a lot of them are willing to fight his corner right now.

We were pointed to testimonials from Sharon Stone and Carrie Fisher (pictured above with Jackson and the doctor). A friend of Dr Klein told me: "He is a truly nice person, a good friend to Michael and a truly amazing doctor."

The 66-year-old has some trouble walking due to a skiing accident but he made his way to the mansion's study to sit in a throne-like chair and talk about Jackson, Murray and his own reputation.

It is clear he is bothered by the allegations made in court, the use (misuse, he says) of his medical records, and by the damage being done to Jackson's memory.

He says he would never have done anything to harm the star and that he was merely putting right the wrongs done by others over the years.

He speaks lovingly of Jackson's three children - and then raves about his affection for the 'Queen of England' - it is obvious he is a man who relishes telling a story.

We departed before the celebrity party was in full-swing - crossing paths with a few Hollywood beauties of the 70s and 80s - to reflect on this strange twist.

Michael Jackson had just two doctors in the final months of his life - their predicaments are very different right now but both will be forever linked by the controversy over his death.