The 'Great Gatsby' star plays an illusionist who performs underwater tricks in the film but one tank stunt went awry when chains keeping her below the surface became tangled, leaving Fisher in a very dangerous position, reported Daily Star.
"Why would Tom Cruise not get a stuntman...? It is so crazy. You're under there, my chain got stuck; I had to really swim to the bottom (of the water tank), I couldn't get up.
"Everyone thought I was acting fabulously; I was actually drowning. All I kept thinking about... I was picturing myself, like, having an autopsy later, bloated and gross in a swimming costume. Who wants to die in a swimming costume? There was a quick release switch and there was a stunt guy standing by with a canister of oxygen, but no one realised I was actually struggling... I just would practice at traffic lights - when it was red," she said.