Leaving people $1 in a will helps stop them from contesting the will. By being named parties in the will and leaving them (each) $1, they cannot claim they were left out of the will. Basically, the testator lets them know what he/she thought of the principals...
A servant burns down his employer's house and ends up on trial for murder. But whenever the name of the accelerant the servant used is mentioned, the phrase "volatile spirits" is repeatedly - and obviously - dubbed in by the original actors. A check of the script filed for copyright purposes at the Library of Congress in Washington, D.C. shows the accelerant was originally "mineral spirits", a paint thinner. Apparently, CBS censors objected to on-air mention of an actual substance that could be used to start fires, hence the dubbing-in of the more generic-sounding "volatile spirits". However, when Doug picks up a glass container from the floor of his office closet, the label on the container reads "mineral spirits." And the censors did not object to Winifred saying that the mineral/volatile spirits smelled like gasoline.
Not only was the caretaker not the defendant in the original novel, he was one of the murder victims.
Raymond Bailey, who plays Mr. Hilliard, the bank employee, is best remembered for playing Milburn Drysdale, president of the Commerce Bank of Beverly Hills on The Beverly Hillbillies (1962).
This is the first appearance of the new introduction, with the stylized bench, judge and attorney becoming a real hand and file, and Mason's face fading into Lady Justice's sword. The next entry (#2.20) reverted to the old introduction, in which the supporting cast of regulars appear on screen.