Murder Conviction in Head Teacher Death A man, Simon Richardson, has been found guilty of murdering a head teacher in a shocking incident. Michael Mullins was dragged to his death in a car. The incident occurred in a location not specified in the available information. The details of the crime and the events leading up to it are not provided in the source. However, it is reported that Richardson was convicted of the crime following a trial. The outcome of the trial has resulted in Richardson's conviction for the murder of Michael Mullins.