Click on a thumbnail to go to Google Books.
Black Orchids (original 1941; edition 1977)
by Rex Stout
References to this work on external resources.
Wikipedia in English (1)
Amazon.com Product Description (ISBN 0553257196, Mass Market Paperback)Not much can get Wolfe to leave his comfortable brownstone, but the showing of a rare black orchid lures him to a flower show. Unfortunately, the much-anticipated event is soon overshadowed by a murder as daring as it is sudden. It’s a case of weeding out a cunning killer who can turn up anywhere—and Wolfe must do it quickly. Because a second case awaits his urgent attention: a society widow on a mailing list of poison-pen letters leading to a plot as dark as any orchid Wolfe has ever encountered.
(retrieved from Amazon Mon, 30 Sep 2013 14:02:51 -0400)
The private detective, Nero Wolfe, with the aid of his assistant, Archie Goodwin, investigates a killing at a flower show and a series of poison-pen letters that result in murder.
(summary from another edition)