Johansdatter worked as a maid for the upper class in Vadsø. They accused her of killing their most prized cows and initiated court proceedings against her. During her trial, they presented what appeared to be a ball of black wool that was found in the flesh of one of the cows as evidence of her involvement. When questioned at the court hearing in June 1678, she voluntarily confessed that as a young child working on Sama farm in Harstad, she was taught magic by a fellow farm worker named Anne, who showed her how to kill livestock by placing eggshells in water that had been gathered in the name of Satan.[3] During this training, Johansdatter claimed she had a vision of a beautifully dressed man standing in front of her, with claws on his hands and feet, who soon after disappeared. Eight years after first learning witchcraft, she claimed to have killed a small, half-grown goat on the Lysbotn farm north of Senja because she was angry with a man named Hans Olsen.[1]
On 6 June 1678, Johansdatter was found guilty of violating God's law and the King's commands, and she was sentenced to death.[1][2] It was emphasized in court that Johansdatter confessed voluntarily, without any form of coercion. After receiving her sentence, she named a Vadsø woman, Kirsten Knudsdatter, as a fellow witch and claimed that Knudsdatter was more skilled and "worse" at witchcraft than she was. However, Knudsdatter was later acquitted of all charges in 1680. When asked by the case's bailiff, Lauritz Faag, whether he would appeal against his wife's verdict, Albert Halvorsen declined and said he believed the charges were correct. Johansdatter was executed by burning that same summer.[1]