Tom Cruise came face-to-face with a British family as he dangled outside the 124th floor of a Dubai skyscraper.
The Mission: Impossible star flashed his famous smile at the Eisenmanns, from Norwich, while suspended by safety wires from the 828 metre-high Burj Khalifa Tower, where he is filming for the fourth film in the series.
"He smiled and stuck his thumbs up," Caitlin Eisenmann, 42, told the Eastern Daily Press newspaper. "He looked like he was enjoying himself and didn't look scared at all. It was amazing to be just the width of a pane of glass away from him. You could even see the hairs on his legs."
Mrs Eisenmann was joined by her husband Simon, 45, and their daughter Imogen, seven.
Filmmakers have said little about what role Dubai will play in Mission: Impossible Ghost Protocol, which will also include scenes shot in Moscow and Vancouver.
Of the decision to film in Dubai, director Brad Bird said: "We love the fact that it's a big, new city, that it hasn't been photographed very much... it's almost like sets that you could never afford."
Mr Cruise said he would be spending many days hanging outside the Burg Khalifa Tower, which is more than half a mile high.
"I can't give you details, but I will be up there," he said.