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Currently you are able to watch "Unknown Caller" streaming on fuboTV, Midnight Pulp or for free with ads on The Roku Channel, Crackle, Freevee, Cineverse. It is also possible to rent "Unknown Caller" on Vudu, Apple TV, Amazon Video, Google Play Movies, YouTube online and to download it on Apple TV, Amazon Video, Vudu, Google Play Movies, YouTube.
A psychopath uses a family's high tech security system with a ticking time bomb to terrorize them for 90 minutes demanding an answer to his question; 'WHO AM I?'
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