Veteran actor Martin Sheen has revealed he is praying for his troubled son Charlie and wants to appear on screen with him again.
The West Wing star said the actor, who has fought a well-documented battle with drugs and checked into rehab last month, had the backing of his family.
When asked how he was supporting his son, Martin replied: "With prayer. We lift him up and we ask everyone who cares about him to lift him up, and lift up all those who are in the grip of drug and alcohol abuse, because they are looking for transcendence."
Speaking at the UK premiere of his new pilgrimage film The Way at London's British Film Institute, the 70-year-old - who acted alongside Charlie in the 1987 film Wall Street - said he would be happy to work with him in the future.
"That would be another miracle and we'd look forward to it, very much so," he said.
In the film - directed by another of his sons Emilio Estevez - Martin plays Tom, an American doctor who scatters the remains of his dead son along the 500-mile Camino de Santiago walk.
Martin said the well-trodden route, from the French Pyrenees to Santiago de Compostela in the north west of Spain, was a journey worth taking.
"I think people are looking for transcendence, particularly in the West. We seek to touch the sacred somehow. I think that's why people use drugs and alcohol, they're looking for some transcendental experience in their lives," he said.
The actor and political activist also said the current unrest in the Middle East was "a great reflection of dissatisfaction" - and insisted he was proud of how US president Barack Obama was performing.