On 14 December 1833, Hauser was told to go to a garden where he would find out about the family he came from. When he got there he was attacked by a stranger who stabbed him in the chest. He managed to get home but died three days later. No one knew who had murdered him, although a strange note was found in a black purse saying that Kaspar would not be able to tell people who had killed him, but that he was from the Bavarian border and that his initials were MLÖ." No one ever found out who the murderer was, and no one ever found out who Kaspar was.