Fortunately, Cuoco had the help of a stunt double: “The motion capture was truly me against myself. The other versions we did, a girl named Monette Moio, who was my stunt double, ended up playing a lot of gold-dress Cassie.

 She was incredible — a lot of the over-the-shoulder stuff, when you see that it’s either me or her. She had a tough job, because she had to copy and mimic every single thing that I did. But most of the time, I was truly working with myself,” added the actress.

However, her work on ‘The Flight Attendant’ took its toll on Kaley Cuoco, especially mentally and even physically: “It was one of the hardest years of my life. Not only personally, but doing this character that was so tormented.

 It was the first time that I started therapy — I’ve been very open about that,” the actress confessed. “I started at the beginning of Season 2, just because I was going through so much right before we started shooting. 

It was horrible. And I developed a stress rash that ran all the way down my body for three straight months that wouldn’t go away. I literally, like, had fire on my leg for three months,” said the actress, even admitting that during this time she could barely walk.