 However, Doser was not charged because a clear motive for killing the victims could not be found, with no recorded meeting between Doser and the victims.However, the majority of the Swiss population still believe Doser was the killer.A man named Hans Blaser felt that his business acquaintance Adolf "Johnny" Siegrist, who was related to the murdered couple, was the main culprit, with Doser assisting in the murder.