I read mysteries and as ever wanting that plot twist that keeps one guessing until the very end, Dame Christie never disappoints me. 
Once again Christie plays around with themes of justice and good & evil. As in all of her cases involving Inspector Hercule Poirot, Agatha leaves her readers hanging until her final lines, creating a thrilling case.

Iconic detective Hercule Poirot has retired to the country, but is drawn in to solve a murder .
In the village of King's Abbot, a widow Mrs. Ferrars unexpectedly committed suicide. This turn of events caused  a spark of rumors . A couple of days before her suicide, Mrs Ferrars admitted to Roger Ackroyd that she is being blackmailed over the murder of her husband. The following evening, Ackroyd is murdered in his locked study , but not before receiving a letter identifying the widow's blackmailer. King's Abbot is crawling with suspects. It's now up to the famous detective Hercule Poirot to solve the case of who killed Roger Ackroyd, a task in which he is aided by the village doctor and narrator, James Sheppard .

Poirot calls into question the morals of the people connected to Roger Ackroyd (his family, friends, and employees). Thanks to his "little grey cells" he's able to disentangle the truth from an increasingly intricate web of lies.

I thoroughly enjoyed this story, and although I did guess the actual culprit at least once, I got there via a different route altogether and it didn’t stop me from suspecting all the other people in the household of murder either because of Christie having that "I suspect everyone" move that made me love her more, because that's what makes a crime fiction fun . I don’t want to say anymore so I do not spoil anything for the ones that still haven’t read it. 

There are, indeed, a lots of clues. Although Hercule Poirot’s busy mind is sifting them out as they appear, sorting them and measuring them, it is true that many of them cancel each other out.

It is well thought through, the writing is clear and the pace is brisk and entertaining. The characters are all interesting, too. Agatha Christie, if you did in fact write this novel as a challenge to present a murder mystery that leaves one guessing until Hercule Poirot points his finger, you succeeded with me!