Rule #1 of the Radio Private Investigator's Union: You must get knocked out at least once per program.

Gerald Mohr was a busy man on radio. He appeared on all sorts of programs, as well as being the star of Philip Marlowe.

The actor in "The Fat Man" radio detective show was J. Scott Smart, who was described as having a "subterranean voice."

We are so accustomed to acting in an electronic medium that today we perhaps do not fully appreciate the skill that goes into acting in which only one element of protrayal. Silent films required motion to get the idea across - and thus in the earliest day of talkies the actors seemed to be over-acting because they had not yet shed the motions necessary to in the silent films. We laugh at silent films, but seldom appreciate the skill that was needed to act in that manner. In like manner on old radio shows, the motions and facial expressions could not be seen, so all that had to be conveyed by voice and sound effects. It took different skills, and in our very narrow modern view of things, we depreciate those skills.

Convenient rhyming

Isn't it convenient for poets that certain words rhyme:
heart and apart
charms and arms
etc, etc