here is the first letter written by "mr. z" it was sanders writing to the 4pi cult......run by lt. col. michael aquino this killing took place a month after the murders of sharon bubes and valerie percy in chicago in 1966 the killing was timed to be right when the movie psycho was released and police asked them to postpone the release for fear it would spark more copycats  the woman he killed was named cheri jo bates.
United States