1. "Prisoners at the bar, have you anything to say in your defence." (p. 43)

The voice on the gramophone offers this question following the accusations of murder made against each guest.

2. "What a duty-loving, law-abiding lot we all seem to be!" (p. 64)

Lombard laughs as he offers this exclamation, made in response to Blore's assertion that he was only doing his duty when he delivered testimony that led to Landor's conviction.

3. "Be sure thy sin will find thee out." (p. 99)

Emily Brent makes this comment as she considers the possible guilt of Mrs. Rogers, following Rogers' death.

4. "If she had behaved like a decent modest young woman none of this would have happened." (p. 101)

Brent makes offers this assessment of Beatrice Taylor;s death.

5. "There are crimes that cannot be brought home to their perpetrators." (p. 104)

Philip Lombard makes this comment to Dr. Armstrong, as the two discuss the recent murders of Marston and Mrs. Rogers

6. "We're all waiting for the end." (p. 116)

General Macarthur offers this comment to Vera Claythorne, as he sits facing the sea, following the deaths of Marston and Mrs. Rogers.

7. "Yes. Of course, you're very young . . . you haven't got to that yet. But it does come! The blessed relief when you know that you've done with it all. That you haven't got to carry the burden any longer." (pp. 116-117)

General MacArthur makes this remark to Vera Claythorne as he sits facing the ocean, waiting for his own death.

8. "And all of them, suddenly, looked less like human beings. They were reverted to more bestial types". (p. 191)

The narrator delivers this comment when only five guests remain alive.

9. "You can go to the rock, Cyril. . . . That was what murder was. As easy as that! " (p. 244).

Vera Claythorne offers this reflection moments before hanging herself.

10. "Murder isn't what most people think. Giving someone a dollop of arsenic, pushing them over a cliff, that sort of stuff". (p. 266)

In his letter of confession, Judge Wargrave quotes this statement of Hugo Hamilton.