Jason Isaacs got to grips with Twilight heartthrob Taylor Lautner in their new movie Abduction - in more ways than one.
The star, best known for playing Death Eater Lucius Malfoy in the Harry Potter films, gets to attack the 18-year-old in his new thriller, which also stars Sigourney Weaver and Maria Bello.
"He is a martial arts wizard in real life - he can do standing double back somersaults, and he used to do exhibitions at the karate world championships - but I had to beat him up, and I couldn't beat my wife in a fight," said Jason.
He enjoyed being on set with Taylor, famous as werewolf Jacob Black in the Twilight films, following his work with Harry Potter stars Daniel Radcliffe, Emma Watson and Rupert Grint.
"It was interesting to see another young person who is universally known but very different to Daniel, Rupert and Emma. The Twilight phenomenon is different," he said.
Jason added: "I am now - and have to be - Team Jacob, because Taylor is a lovely boy."
The 47-year-old previously admitted to being apprehensive about the fight scenes.
"He's been doing karate since he was six. I've done ten kickboxing lessons. We'll see how that turns out! Hollywood decided he is the latest action hero apparently, and I am there in this film to make him look even more muscular. And I will do that," he told BBC Radio 2.
:: Harry Potter And The Deathly Hallows: Part 1 opens in cinemas on November 19.