Oscar winner Octavia Spencer has said she took on the lead role in the new horror-thriller Ma because it was "something that was completely different".

The film, which has just been released, reunites Spencer with The Help director Tate Taylor and tells the story of a group of teenagers who get more than they bargain for when they befriend Sue Ann (Spencer), a middle-aged misfit in their small town.

Octavia Spencer as Sue Ann in Ma

In an interview for The Hollywood Reporter in Studio programme alongside co-star Diana Silvers, Spencer said the film "was a yes for me because I'm a huge genre fan". 

"I love psycho-horror, psycho-thrillers, horror-drama, all of the above," The Shape of Water star continued. "And I wanted to do something that was completely different."

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Discussing her character in the film, Spencer said: "I really exist in the true crime genre. I watch a lot of true crime, and I read a lot of true crime. So, when I start to realise, 'Oh, she has this, and possibly this', I researched those disorders, then it made it easy to connect the dots. 

"There's a reason she goes from point A to point Z so rapidly, and the reasons why it's believable is because this is how her brain works. So, I spent time watching those types of documentaries about people who exhibit those personality traits."

Ma is in cinemas now - read our review here. Click here for more movie news.