Score: 7 of the 10

Jerry and Rachel are two strangers thrown together by a mysterious phone call from a woman they have never met. Threatening their lives and family, she pushes Jerry and Rachel into a series of increasingly dangerous situations, using the technology of everyday life to track and control their every move. The rating displayed next to the title is based on the average ratings on Netflix, Moviemeter, and IMDB, and is a number between 0 and 5.