Just saw this book on Amazon, has anybody read it yet? https://www.amazon.com/Columbo-Rhetoric-Inquiry-Resistant-Responders/dp/1783209852
This is the first I've heard of this book. It actually looks interesting and I may ask Mrs. Claus to see if she can find it within her to slip this under the Christmas tree.
Interesting! I was not aware of it - thanks for posting. And it's a "real book" too, unlike some recent Columbo treatises that are e-books only.