Michael J. Fox has been reunited with his co-stars of Back to the Future, 33 years after the first film in the trilogy.
A photo posted on Instagram showed the actor, who found fame in the role of the teenager Marty McFly in the time-traveling franchise, with cast members Lea Thompson, Christopher Lloyd and Thomas Wilson.
The shot was taken at the convention of Fan Expo Boston and was shared by Thompson, who played Marty's mother.
"Four old friends come back from the future," he said.
Lloyd, who has acted as an inventor Emmett "Doc" Brown, shared the same photo and wrote: "This was special".
"Wow, this just happened," said Wilson, who played the villain of the trilogy, Biff.
The cast took part in a round table in which they faced the speculation that a fourth film could be on the cards.
According to convention reports, Wilson joked: "Basically, I think America is saying," Come on, they destroyed every franchise with bad sequels, why not? "Come on, we'll watch it until it's done disgusting ".
However, Fox, who was diagnosed with Parkinson's disease in 1991, told the crowd that co-creator Bob Gale is the "gatekeeper of the franchise".
Both Gale and director Robert Zemeckis have previously indicated that another movie of Back to the Future is unlikely.
Back To The Future was released in 1985 and sequels followed in 1989 and 1990.