On June 18, the Schneiders went searching for a potential victim in Neulengbach when they spotted 18-year-old Rosalie Kleinrath. The pair approached her and said that they were looking to hire a servant for a Baroness Falke, under whom Mrs. Schneider served in Klosterneuburg. Kleinrath agreed to the proposal and accompanied them to their lodgings, before accepting an invitation by Franz to go out for a walk in the woods near the hamlet of St. Christophen. There, he proceeded to strangle the victim before stripping her of all valuables and leaving the body in the woods. The couple then went to her apartment, stole all of her remaining belongings and sold them.
