And then there was none

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Across
  1. 5. Punishment inflicted on someone as vengeance; the idea driving the events on the island.
  2. 9. An acknowledgment of guilt; often hinted at, forced, or manipulated during the plot.
  3. 10. A feeling of responsibility or remorse for some offense, whether real or imagined; central to many characters' psyches.
  4. 11. The state of being separated from others; the island setting reinforces characters' vulnerability.
  5. 12. The act of misleading or tricking someone; used by the murderer and among the guests.
  6. 14. Pretending to have virtues one does not possess; several characters hide dark pasts under respectable facades.
  7. 15. The unlawful premeditated killing of one human being by another; central to the storyline.
Down
  1. 1. The act of controlling or influencing someone cleverly or unscrupulously; used by the mastermind.
  2. 2. Literary device where clues hint at future events; used throughout to build tension.
  3. 3. The quality of being certain to happen; the countdown of deaths builds a sense of fatalism.
  4. 4. Irrational suspicion or mistrust of others; escalates as the guest list dwindles.
  5. 6. An inner sense of right and wrong; torments some characters, while others lack it entirely.
  6. 7. A feeling of mistrust or doubt; grows as guests are killed one by one.
  7. 8. A story with symbolic meaning; the deaths and rhyme serve as a dark moral allegory.
  8. 13. The principle of moral rightness; a major theme as characters face punishment for past crimes.