However, in this myth there were some further developments. Calon Arang had a book of black magic spells, which her son-in-law discovered and gave to his master at Airlangga’s court.When Calon Arang realized that her book had been taken she became angry, and again asked for the help of Durga, but this time she could not defeat the people of Airlangga’s kingdom, and so peace returned.There are other versions of this story as well.