David Seaton examined her as a witch and obtained a confession that caused the apprehension of several others later declared to be notorious witches. Agnis Tompson confessed before King James to have attempted his assassination using witchcraft on more than one occasion. The pamphlet details how she attempted these. She also participated in a sabbat during All Hallows' Eve as her and others sacrificed a cat and sent it into the sea as they chanted in hopes of summoning a tempest to sink a fleet of ships accompanying James as he was arriving in the port of Leith from a trip to Norway. One ship was sunk from the storm containing gifts meant for the Queen of Scotland but the others including the ship transporting King James were unharmed.