Curtains for Three by Rex Stout

Three Nero Wolf novellas:

First there is the case of the two passionate lovebirds who want to make sure that neither is a cold-blooded killer.

 Then it’s off to the races, where Wolfe must choose from a stable of five likely suspects to corral a killer on horseback.

And finally the detective finds himself the confidant of a distraught, self-described grifter who claims a murderer is stalking Wolfe’s own brownstone.