Watch 1

+1, also known as Plus One, centers on David and his non-traditional college girlfriend, Jill. When David surprises Jill with an unplanned visit, they end up at a house party. However, a supernatural event, which occurs just outside of the house, triggers chaos.

1 is a 2013 thriller with a runtime of 1 hour and 35 minutes. It has received mostly positive reviews from critics and viewers, who have given it an IMDb score of 7.9.