Garda chief fails to clear up confusion left by letter
The most frightening play I ever saw was Max Frisch's The Fire Raisers, an allegory on the rise of Hitler.
Biedermann, a decent, bourgeois businessman, reads in the papers that two arsonists are in town, talking themselves into people's homes.
He is confident that he could never be taken in by such conmen. Then Schmitz and Eisenring turn up at his door.