My father is a prisoner in his own home, said Class 95FM DJ Mike Kasem on Thursday.
His dad, Casey, is a legendary DJ and voice actor.
He used to host the famous American Top 40 radio show. The show was broadcast here over Rediffusion.
Mike, along with sisters Kerri, 41, and Julie, 38, have been barred from seeing their dad at his Holmby Hills mansion near Hollywood by their stepmum, Jean Kasem, an actress best known for her role in the short-lived Cheers spin-off in the 80s, The Tortellis.
Stricken by Parkinson's Disease, the 81-yearold Kasem has also lost his voice due to the disease.
Mike, 40, told The New Paper: "He's the best dad in the whole world and he's really close to us.
"It kills me to not be able to see him.
"But this was something that we were prepared for as we've always known that Jean doesn't like us.
"We've always had a strained relationship with her.
"What we want to tell her is, just let us see him, this is not about the will.
"We're praying that she will change her mind."
Mike is currently living in Singapore, while his sisters live in the US.