The murderer in “The Twisted Scarf” is Mrs. Carlisle, who disguised herself as a man when killing Doris Hatten before the story opens. Cynthia Brown sees Carlisle among the Flower Club people touring Wolfe’s collection and recognizes her as the “man” who visited Doris shortly before she was killed. Cynthia tells Archie that she knows who killed Doris but, for no good reason, consistently refers to the killer as “he.” Mrs. Carlisle, catching on that she’s been recognized, strangles Cynthia in Wolfe’s office before she can talk to Nero. Then, as the last Flower Club members trickle out of the brownstone, she “discovers” the body! If she hadn’t done so, there wouldn’t have been a story and she wouldn’t have been a suspect. So why did she do something so stupid? If I may revert to Keeler-speak, what motivated and motived her? Stout never tells us.