Office

In the gripping 2015 South Korean thriller "Office," a detective is tasked with uncovering the truth behind a mild-mannered man's brutal murder of his family and subsequent targeting of his colleagues. As he questions those around him, he uncovers a web of secrets and lies among the office workers, who seem to be hiding something. But what if the true culprit was someone no one expected? The film expertly weaves together suspense and mystery, leaving the audience guessing until the very end.