why doesn't the judge's heir inherit his property

Jaffrey found his uncle's will, which favored Clifford, and destroyed it, leaving an older will in his favor. Jaffrey made it appear as if Clifford committed murder. That was Jaffrey's inward criminality. Soon after Jaffrey's death, news arrives that his son died over in Europe. By this misfortune Clifford and Hepzibah became rich.