United Kingdom, March 27 -- Zazie Beetz shot in "freezing cold water" for 12-hour days for They Will Kill You.

The 34-year-old actress found the blood splattering action and wielding weapons easier to deal with than filming in faux rain for scenes in the high-octane horror-action movie, in which she plays lead Asia Reaves.

Zazie - who made the movie during the winter in Cape Town, South Africa - recalled to People: "I would actually say the most difficult stuff was the rain scenes, which I wasn't expecting.

"Those are bits and bobs throughout the movie, but when you're doing it, it feels like it's the entire shoot. They have to use cold water because there's rain machines and because warm water steams in the camera."

Speaking about ho...