Big Bang Theory star Kaley Cuoco's new tv thriller The Flight Attendant is due on Sky One and NOW TV on March 19th.

Based on the 2018 novel by Chris Bohjalian, the HBO show is the first major role for Cuoco since the end of BBT in 2019 and sees her play flight attendant Cassie, whose date night with a handsome passenger in Bangkok goes horribly wrong.

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After a night of drinking, Cassie wakes to find that her date Alex has been brutally murdered, and she has no recollection of what happened.

In December, the show was renewed for a second season by HBO after it proved a hit with viewers and critics.

The series had also been nominated for two Golden Globes, with Kaley included in the Best Performance by an Actress in a Television Series category.

However, before the show became a hit, Cuoco (35) revealed she was worried her fans would "hate" it.

"All that went through my mind for the past three-and-a-half years since I optioned this book is, 'Oh my God, am I making a mistake?'," she said.

"'Are people going to hate this? Are they going to love it? Oh God, this is so bad, what am I doing? Why am I doing this?'

"Being an [executive producer] now, you just know way too much, you see all the struggle. As an actor, I get to wake up and walk in, you do your job and then you leave, and you see the end product.

"But learning the road to the end product, it actually makes this even sweeter, because you know how hard the work is, and how much of a huge team effort it takes."