Multiple choice general knowledge

Which plot device connects the following novels: "Death on the Nile", "The Mysterious Affair at Styles", "Endless Night"?

  1. the conspiring murderers pretend to hate each other

  2. the murdered stages unsuccessful murder attempts on him-or herself

  3. the murder was committed at another time than previously assumed

  4. the invistigator's very first suspicion turns out to be correct

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Agatha Christie used the plot device where conspiring murderers pretend to hate each other in multiple novels including Death on the Nile, The Mysterious Affair at Styles, and Endless Night. This creates a red herring that misdirects investigators. The other options are not Christie plot devices that connect these specific works.