Curtain, (Hercule Poirot, 44) Agatha Christie. William Morrow (ISBN: 9780062074096) 2011 (first published in 1975).

Summary: In Poirot’s last case, he and Captain Hastings reunite at Styles to catch a murderer involved in but unsuspected in five murders.

It all began with The Mysterious Affair at Styles when Poirot and Arthur Hastings team up to solve a murder. Now they are back at the country manor of Styles once more. But this time, the matter is far more urgent. Poirot believes that their is a mysterious figure identified as X in the party. X has committed at least five murders and gotten off unsuspected in each case. Poirot believes he is out to murder again. He has asked for Hastings help.

Poirot is a dying man. He has a heart that is failing, arthritic joints that confine him to a wheel chair, and he is a shadow of his former self. Only his hair and moustache are still black. Hastings is there to be his eyes and ears. But this is hard for Hastings. He wants to know who the murderer is and spends most of the story trying to figure that out. Yet Poirot won’t reveal what he knows. It could be deadly for his old friend, who has a hard time with secrets.

Colonel and Mrs. Luttrell now own and run Styles. The guests all know each other. Sir William Boyd-Carrington has invited Dr. John Franklin and his wife Barbara, often needy of bedrest. Hastings daughter Judith is a research assistant with Dr. Franklin. Major Allerton is a ladies man. Hastings fears he will try to make Judith his next conquest, so much so that he makes a failed attempt to murder him. Elizabeth Cole is the sister of the accused in one of the murders. And Norton is a quiet, retiring type who spends his time watching birds, as well as the other guests.

A certain sense of foreboding rests over the party. At one point, Mrs. Luttrell is accidentally wounded when Colonel fires at what he thinks a rabbit. Paradoxically, the accident draws them closer. Then, after a busy day with Boyd-Carrington in town, Barbara Franklin dies under suspicious circumstances. Even Judith is a suspect. Is this once again the work of X? And why did Poirot not stop him?

In the end Poirot does stop the killer in a most unusual ending that I will not spoil. It will be his last time working with Hastings and as some editions note, his last case. What is fascinating is that this was actually written in the 1940’s and locked up until late in the author’s life, along with Miss Marple’s last case. Certainly, in terms of plotting, it reflects Christie at her peak rather than in her later works. It reflects an interesting decision to plan the denouement of her detective before her own. And Styles and Hastings provide the ideal bookends to Poirot’s illustrious career.