From The Perry Mason TV Show Book (Revised)
Devious Allen Sheridan, soon to inherit $162,000, has just as many enemies as dollar bills. Since he’s hurt a lot of people, and owes money to many more, when he turns up dead (murder weapon: an ashtray) his killer could be anyone.

It turns into a family affair—and a job for Perry when Sheridan’s aunt Sarette becomes the prime suspect.

suggested edit: Sarette is Henry's cousin and is, thereby, Allen's cousin as well, not Allen's aunt, even though Allen himself calls her "aunt Sarette". jfh 12Sep2023