Dr. Horatio Glass is visiting the office of an eccentric publisher. He is friends with the fiance of Mr. Tallant's niece who also works for the company, Temple Publishing. It is in Mr. Tallant's private elevator that he is killed, in between floors . He was not a very nice person (though he didn't seem particularly evil from what little we saw of him.) But the why isn't nearly as mysterious as the how. How could he have been shot in an elevator having been closed in alone just moments before?
I think this was probably a fair play mystery, but I don't know enough about said clues to be able to say. Certainly a product of its time but not as bad as it could have aged.
Three stars
This book came out in 1939
Borrowed as audiobook from Hoopla
Opinions are my own
