Isla Fisher nearly drowned on the set of Now You See Me. The 37-year-old Australian star was left struggling for air when she got tangled up in chains while performing a stunt as a glamorous escapologist in a water tank, after being submerged for two and a half minutes.

"They had a guy who was off camera, but he was a long way away with a can of oxygen. By the time I realized I couldn't get up and beckoned for him, I realized that I had run out of air," she said. The petite star explained that there was an emergency "kill switch" in the tank, which would have completely drained it in 70 seconds but she couldn't reach it: "Luckily, I managed to get free and stay level-headed and got out before it went even more horribly wrong."

Isla revealed all she could think about was what she was wearing in that scary moment: "Not in a swimming costume. No one wants to go in a swimming costume."

Despite coming out of the incident unscathed, the actress doesn't think she is brave in front of the camera. "I don't see myself as particularly brave. I rely on gut instinct to accept a role. If something terrifies me I am going to do it. The director [Louis Leterrier] said to me, 'Wow. I've worked with so many actors on big action movies, and you're the only one who's done all their own stunts.' I said, 'I didn't know I had a choice.' I thought you just had to get on with it. It's the Australian way. I'm willing to pull a bad face, and to sweat a bit."