How the podcast ‘Serial’ influenced the Danish director of ‘The Guilty’

“The Guilty” is a Danish movie that takes place in two rooms. There’s really only one actor on-screen. Nearly all of the action takes place over the phone. The lead character is a police officer who’s on desk duty taking emergency calls. He’s being punished for something. He’s mad that he has to do this boring job -- until he gets a call from a woman who says she’s been kidnapped. He needs to find her before it’s too late.