Michael Mattioli trial missing witness!! The Michael Mattioli trial has been looming over Milwaukean's heads since April 2020. It is now Oct 19th 2022 and we're still looking for answers. Unfortunately now with the case beginnings proceedings we are now told that a key witness " The medical examiner" in the case has retired and been missing since the day of his retirement. If this key witness goes unfound this could turn over the Mattioli case and set Mattioli free.