From The Perry Mason TV Show Book
This summary is wrong. Carleton Gage was not murdered, Ernest Demming was. Also, Carleton Gage had no wife or sister-in-law. Claudia and Joane were his nieces, I think. When Carleton Gage lapses into a coma, two of his beneficiaries threaten to close the orphanage he supported. Carleton's wife and sister-in-law plan to keep the orphanage open but their good intentions are complicated by Carleton's murder.