Plot summary
The police arrive via helicopter and arrest Jonathan. The detectives reveal Jonathan is the father of Elena's daughter. There is a short court hearing, and he goes to jail. Fernando confronts Grace. Grace later informs the police, and says that she felt threatened. The police indicate that Grace is also a suspect, and she asks why. The police then show a video from an outside camera around the place of the murder, on the night of the murder. The video shows Grace walking at night.
Credits
Adapted from Wikipedia contributors, The Undoing. Series, exact episode number and English title matched. Paragraphs formatted; references and illustrations omitted.