The Crooked Man (2016) on Netflix

Olivia returns home after six years, and a string of unusual deaths leads her to believe that she's being haunted by a mysterious force from her childhood.

While at a slumber party, twelve-year-old Olivia is blamed for the horrific and mysterious death of her friend, after singing a song (created by a reclusive mastermind, Milo White) that summons a demonic figure known as 'The Crooked Man'. Returning to her hometown six years later, a string of unusual deaths lead Olivia (Angelique Rivera) to believe that she's still being haunted by whatever she saw that fateful night. Once you sing the rhyme, everyone in the house is cursed to die by his hands.

—Teaser-Trailer.com