The Case of Constant Doyle

This was the first of four consecutive episodes in which a "special guest star"—in this case, Bette Davis—filled Mason's role as the defending attorney; Raymond Burr, who portrayed Perry Mason, was in the hospital for surgery during these episodes.

Teenager Cal Leonard is in jail for trespassing at the Otis Instrument Company and assaulting a security guard.

It turns out that Cal's late father, an engineer for Otis who had died from alcoholism, had invented a device that made the company millions but was only paid $2000 for it.

Later, while being questioned by Constant, Letty claims that Joseph Doyle, while acting as legal consultant to Otis, was actually the one responsible for swindling Cal's father.

In the courtroom, Constant brings the truth to light by pointing out something irregular about how Steven's body was dressed, and by explaining the true meaning of one of the entries in Steven's date book.