This is book 25 of the "Nero Wolfe" series.

This note contains spoilers for the book.

Nero Wolfe still. I'm skipping around at random enough that I may need to go back and get them all in order.

This one is about a promotional contest involving verses about women in history. The man who thought of the idea and wrote the verses is murdered, and a copy of the answers stolen.

As with most of these books, there are a group of main characters, all connected -- in this case members of the advertising agency, their lawyer, and the man from the client company. This lets Stout bring a number of people and their relationships into the novel all at once (the other common one is the various members and dependents of a rich family that all live together).