And Then There Were 51: Three Act Tragedy by Agatha Christie

Get ready for some drama! Both from this theater-saturated novel
and from your intrepid co-hosts, as one of us quite liked this one,
the other, less so. But it's not all tragedy, because stage plays
aren't the only things to come in three parts. So too do... love
triangles! And we know how Papa Poirot enjoys a romance. So join us
as we debate the merits of this rare Hercule Poirot novel to
feature another detective, one Mr. Satterthwaite of "The Mysterious
Mr Quin" fame. He too enjoys a side-dish of romance amidst a
generous helping of murder. Let's dig in.