History TearJerker / AndThenThereWereNone

* Marston ran over and killed kids with his car. And he zero remorse or guilt for them, only feeling annoyance that his license was suspended.

* The guilt that Mrs. Rogers feels for having killed their old employer by [[MurderByInaction withholding her medication]] is apparent when she drops the service tray after hearing the record announce their crime. She's so distressed, in fact, that she needs to be put to bed and sedated--which is, of course, how the murderer is able to slip her a lethal drug overdose. He notes at the end that Mr. Rogers was the stronger-willed of the two, and had likely pressured her into their crime, which is why he killed her so early (as only the second murder). Even he felt sorry for her and thought she deserved a MercyKill.

* Among the guests, General [=MacArthur=] has the saddest backstory. His wife's lover was a soldier under his command during World War I, so the General sent him out in a mission with no chance of survival. He didn't gain anything from his crime, since his wife died shortly after the war, leaving him alone with his guilt. Once the accusations are brought up, he calmly accepts the impending death. Owen kills him quickly because of it.

* Hugo, Vera's lover and the uncle of the boy she set to die, becomes an alcoholic after his nephew's death. Vera [[DidntThinkThisThrough never thought]] that the boy dying and Hugo ''knowing'' he's the cause would kill any chance of the two to be together. As Hugo says :to Wargrave:

* Among the guests, General [=MacArthur=] has the saddest backstory. His wife's lover was a soldier under his command during World War I, so the General sent him out in a mission with no chance of survival. He didn't gain anything from his crime, since his wife died shortly after the war, leaving him alone with his guilt. Once the accusations are brought up, he calmly accepts the impending death. [[spoiler: Owen kills him quickly because of it.]]
* Hugo, Vera's lover and the uncle of the boy she set to die, becomes an alcolholic after his nephew's death. Vera [[DidntThinkThisThrough never thought]] that the boy dying and Hugo ''knowing'' he's the cause would kill any chance of the two to be together. As Hugo says [[spoiler:to Wargrave]]:
-->Nobody else ever thought of it. But I knew the moment I looked at her — when I got back — after... And she knew I knew... What she didn’t realize was that I loved that kid...

* Hugo, Vera's lover and the uncle of the boy she set to die, becomes an alcolholic after his nephew's death. Vera [[DidntThinkThisThrough never thought]] that the boy dying and Hugo ''knowing'' he's the cause would kill any chance of the two to be together.

* Among the guests, General [=MacArthur=] has the saddest backstory. His wife's lover was a soldier under his command during World War I, so the General sent him out in a mission with no chance of survival. He didn't gain anything from his crime, since his wife died shortly after the war, leaving him alone with his guilt. Once the accusations are brought up, he calmly accepts the impending death. [[spoiler: Owen kills him quickly because of it.]]

* Among the guests, General [=MacArthur=] has the saddest backstory. His wife's lover was a soldier under his command during World War I, so the General sent him out in a mission with no chance of survival. He didn't gain anything from his crime, since his wife died shortly after the war, leaving him alone with his guilt. Once the accusations are brought up, he calmly accepts the impending death. [[spoiler: Owen kills him quickly because of it.]]

!!The Miniseries
* Differently from the book, Emily Brent gets a clear AlasPoorVillain moment. While her accusation is the same as in the book (with the added implication that she was attracted to Beatrice), she [[spoiler: suffers a breakdown when she allucinates the girl she has led to death]] and spends [[spoiler: her last scene]] alone, scared and saddened in the darkened parlor, after thanking Vera for a small favor, which is the only [[spoiler: and last]] moment in which she speaks to someone else with genuine care.
* Although what he did [[spoiler: to the hapless James Landor]] was disgusting and unforgivable, it's quite upsetting to watch William Blore's VillainousBreakdown near the end of the series. Especially with the buildup beforehand where he suggests that perhaps they are already dead, and being punished in hell [[spoiler: for being involved with the deaths of innocent people.]] What [[spoiler: Wargrave's]] victims are put through in the novel is inhumane and reduces them to animals. You feel sympathy for (most of) them, despite what they have all done to get there.
* Pretty much any flashback of Cyril's death can bring one to tears. In universe, too, for the fishermen who tried to rescue him. It's doubtful that they even knew him, but they didn't have to -- a small boy had been in danger, they hadn't been able to get to him in time, and he died. The grief on their faces is absolutely heart-wrenching.

* Although what he did [[spoiler: to the hapless James Landor]] was disgusting and unforgivable, it's quite upsetting to watch William Blore's VillainousBreakdown near the end of the series. Especially with the buildup beforehand where he suggests that perhaps they are already dead, and being punished in hell [[spoiler: for being involved with the deaths of innocent people.]] What [[spoiler: Wargrave's]] victims are put through in the novel is inhumane and reduces them to animals. You feel sympathy for (most of) them, despite what they have all done to get there.

* Among the guests, General [=MacArthur=] has the saddest backstory. His wife's lover was a soldier under his command during World War I, so the General sent him out in a mission with no chance of survival. He didn't gain anything from his crime, since his wife died shortly after the war, leaving him alone with his guilt. Once the accusations are brought up, he calmly accepts the impending death. [[spoiler: Owen kills him quickly because of it.]]