From The Perry Mason TV Show Book (Revised)
When a man named Bertrand Allred is found dead in a car at the bottom of a cliff, the evidence points to his wife Lucille…sort of. There is also Allred’s business associate, Bob Fleetwood, Fleetwood’s girlfriend, even the old buck who lived near the murder scene—all of them suspicious.

Fans of the Batman TV show will note that the murdered man, Bertrand Allred, is played by Neil Hamilton, who went on to star as Commissioner Gordon on the caped crusader’s show. Coincidentally, Yvonne Craig, who plays Allred’s daughter in this episode, would later play Gordon’s daughter (a.k.a Batgirl) on the same series.