The film you are referring to is the original Danish thriller (Danish: Den skyldige ), released in 2018. It is widely celebrated as a masterclass in minimalist filmmaking, taking place entirely within an emergency call center. Movie Overview
The film plays out in real-time over approximately 85 minutes. It relies heavily on sound design and the audience's imagination to visualize the events occurring on the other end of the line.
It explores the dangers of making assumptions with limited information and serves as a deep psychological character study of its protagonist. Critical Reception

