A man accused of killing a Dallas County couple last year has waived formal arraignment. An attorney representing Billy Sage Medley appeared in a Dallas County courtroom Friday to file the official waiver. Medley entered a plea of “not guilty.” He’s one of two men accused of murder in the shooting death of Joe and Brandy Allen last September. The next hearing for the case has been scheduled for July 19th. Medley has been ordered to appear in person for that proceeding.