KUALA LUMPUR, April 5 -- Back in August last year, one of the worst-kept secrets in the Marvel Cinematic Universe was confirmed - yes, Florence Pugh was in Malaysia shooting for Thunderbolts*. Yes, she did jump off Merdeka 118.

Now, Marvel Studios have revealed how that happened - and more importantly, how Pugh conquered her fears in a behind-the-scenes featurette to drum up hype for the upcoming film.

"Of any stunt in any movie, this is amazing. How many times do you see someone throwing themselves off a building?

"It's strange how zen... I feel," said Pugh, who played Yelena Belova the Black Widow successor, in the video on YouTube.

Pugh could be seen practising first with a harness, while the skyline of Kuala Lumpur could be seen a...