A mom says she's been left frightened to go to bed after a sleep app recorded a man's voice asking "Can I rip the sheets down ... a Cockney accent making a creepy comment at 1:10 a.m. on Tuesday ...

The sequel stars Naomi Scott, who plays Skye Riley, a pop star down on her luck ... which sees her on the receiving end of a fateful creepy smile. Once the smile-monster latches onto a person ...