1. Surprise, surprise: the murderer is... exactly who it appears to be! In which novels did Agatha Christie trick the reader like that? "Murder on the Links", "Murder in Mesopotamia", "Murder on the Orient Express" "The Murder at the Vicarage", "Lord Edgware Dies (a.k.a. Thirteen At Dinner)", "The Hollow" "Why Didn't They Ask Evans", "Sparkling Cyanide (a.k.a. Remembered Death)", "Destination Unknown (a.k.a. So Many Steps To Death)" "Dead Man's Folly", "Mrs. McGinty's Dead", "Death in the Clouds"

2. Which plot device connects the following novels: "Death on the Nile", "The Mysterious Affair at Styles", "Endless Night"? the conspiring murderers pretend to hate each other the murderer stages unsuccessful murder attempts on him- or herself the murder was committed at another time than previously assumed the investigator's very first suspicion turns out to be correct

3. An exceptionally clever twist that went down in the history of detective fiction was when the first person narrator of a novel turned out to be the murderer. Agatha Christie later used that twist once again. Which two novels am I talking about? "Endless Night" and "The Pale Horse" "The Murder of Roger Ackroyd" and "Endless Night" "The Pale Horse" and "The Moving Finger" "The Moving Finger" and "The Murder of Roger Ackroyd"

4. What is the plot device used in "Evil Under the Sun", "The Sittaford Mystery" and "Murder on the Orient Express"? the time when the murder appears to have happened turns out to be staged doctored evidence is left at the scene the murder is committed by two or more conspirators the investigator solves the problem thanks to a chance remark by someone not involved

5. In which novels is every suspect involved into either the murder or its cover-up? "Murder on the Orient Express" and "The Hollow" "Death in the Clouds" and "Cards on the Table" "The Hollow" and "Death in the Clouds" "Cards on the Table" and "Murder on the Orient Express"

6. What happens in "Murder in Mesopotamia", "Third Girl" and "Why Didn't They Ask Evans"? the murderer or their partner impersonates someone else one of the murders was actually an accident the victim is the one who originally involved the investigator all novels are narrated in the first person

7. Frequently, the one who involved the investigator in the first place turns out to be the murderer. In which of the following novels is that the case? "Sad Cypress", "Three Act Tragedy" and "One, Two, Buckle My Shoe" "Lord Edgware Dies" (a.k.a. "Thirteen At Dinner"), "Peril at End House" and "The ABC Murders" "The Body in the Library", "Nemesis" and "Murder at the Vicarage" "N or M?", "By the Pricking of My Thumbs" and "Postern of Fate"

8. In two subtly crafted, psychological novels, "Ordeal of Innocence" and "Curtain", the villain of the piece did not actually commit any murder(s) at all. True False

9. What do the respective murderers in "Crooked House", "A Murder Is Announced", "The Mirror Crack'd From Side to Side" and "Peril at End House" do? stage murder attempts on their own lives accidentally kill someone else than the intended victim try to murder the investigator kill in a spur-of-the-moment decision

10. Bonus question: what do "The Mysterious Affair at Styles" and "Peril at End House" have in common? the most important witness is someone who usually never notices things a chance remark by Hastings enables Poirot to solve the case Poirot grants the murderer the option to commit suicide before the trial Miss Lemon has to do important errand work for Poirot