Might As Well Be Dead — Rex Stout

Eleven years ago, wealthy Nebraska businessman James Herold gave his only son, Paul, a very raw deal. Now he wants Nero Wolfe to track Paul down so that he can make amends. But what if the young man doesn't want to be found...and what if he's the same P.H. who's currently on trial for cold-blooded murder? It's a case that will draw the great detective and his dedicated sidekick into a sticky web of deceit, one that will tax their resources to the utmost, and even cost them one of their own.