I remember that Ian Martin had also written for soaps, so I did some investigating. I found that Ian Martin was a writer on "<A HREF="https://www.otrcat.com/p/young-doctor-malone">The Young Doctor Malone</A>." It is appears that he was involved in the radio series. Maybe he had a few ideas or unused plots he figured he could use for the Mystery Theater? Just a thought. I'm sure as a writer for that soap (as well as others), it necessitated his needing to have background knowledge (and already a possible interest) in medicine.