The impetus for writing the play was a real event - the investigation of the loss of the class register at a boys' school in Vienna's 4th district. The perpetrator was most likely a student named F. Kirchner. Cimrman was a police inspector in Vienna's 4th district at the time, and the school principal turned to him when all educational measures had failed. Six police officers followed the suspect for three days, but to no avail. Cimrman therefore decided to influence Kirchner in a different way:...