VIDEO : What is The Origin Of The Monsters From ?A Quiet Place??

'A Quiet Place' is a certified winner.
It holds a 96% fresh rating on Rotten Tomatoes.
It also took in $50 million at the box office.
The film centers around monsters with extra sensitive hearing.
If they hear you, they hunt you.
What's the origin of the monsters?
Director John Krasinski said "They're definitely aliens."
They?re an evolutionary perfect machine. The idea is if they grew up on a planet that had no humans and no light, then they don?t need eyes, they can only hunt by sound. They also develop a way to protect themselves from everything else ? that?s why they?re bulletproof.