The Diamond Pin

This one was quite intriguing at first but it got a bit draggy in the middle and then Fleming Stone had to pop up and solve it at the last minute. I begin to think the distant genius might be a bit annoying to me if I read too many in a row.... I had a hard time with feeling any sympathy for the very nasty-tempered victim and I think it kept me from being able to fully enjoy the clues and the wish to find out what happened to her.