For 10 points, name this Swiss author of the plays
One of this author's novellas is divided into 24 sections, each consisting of a single long sentence, and is subtitled "on the Observing of the Observer of the Observers." That novella describes how Otto von Lambert hires the filmmaker F. to document his wife Tina's mysterious death. He wrote a play whose first act ends with a man who receives visions from King Solomon strangling his nurse Monika Stettler. In the second act of one of his plays, two characters reveal themselves to be the spies Kilton and Eisler before Mathilde von Zahnd vows to control the world using the Principle of Universal Discovery. This author of The Assignment also wrote a play set in the town of Gullen, whose inhabitants ritualistically murder Alfred Ill in order to receive a billion dollars from Claire Zachanassian. For 10 points, name this Swiss author of the plays The Physicists and The Visit.
One of this author's novellas is divided into 24 sections, each consisting of a single long sentence, and is subtitled "on the Observing of the Observer of the Observers."
Friedrich Durrenmatt