xreactivity

a measure of relatedness between two antigenic substances

And Be a Villain

And Be a Villain - Rex Stout, Maan Meyers

 

Another fun read from Rex Stout. It's not much of a mystery, but that's not really why one reads a Nero Wolfe book, is it? The cameo by Arnold Zeck was interesting. I've heard he appears in other books as a kind of nemesis for Wolfe.