In the summer of 1928, due to his previous experience in dealing with possessions, he was requested by the Bishop of Des Moines to conduct the rite of exorcism on a Anna Ecklund, a 46-year-old woman who was suspected of being possessed.

Receiving this, he chose a convent of Franciscan Sisters on the outskirts of the town for its privacy.

Two days before Christmas of that year, he claimed the demons were driven out, and the woman cried "My Jesus!

This piece made it back to German-speaking Catholics in the United States and was translated into English in 1935 as Begone Satan by Celestine Kapsner, a Benedictine monk of Saint John's Abbey in Minnesota.

It remained unpublished until 2020, when it was included in Joseph P. Laycock’s The Penguin Book of Exorcisms.