Principals In Murder TrialROY WERTZ, the Victim of the Tragedy.ROBERT BEEPER. Wertz's Son-in-Law, found Guilty of Slaving Him.MRS. MIMA WERTZ, the Widow, Indicted with Her Soa-in-L*Tr.MRS. BERYL WERT Z-LEEPER Wife of Robert, and Daughter of Roy, Indicted, with Her Husband.