故事简介(英文书籍)
After a year apart Hercule Poirot, now crippled with arthritis, is reunited with
his old companion Captain Hastings, who has since become a widower. When they
receive a letter from Styles Court, the place where they solved their first murder
together, it seems like fate and they readily accept. However, after the great
detective brands one of the seemingly harmless guests, whom he will only identify
as 'X', a ruthless serial killer, people begin having doubts about the capability
of his once renowned 'little grey cells'. But Poirot is aware that he alone must
work quickly before the murderer strikes again, even if it means putting his life
on the line...