Although there are many themes of "The Landlady" by author Roald Dahl, one of the main themes is appearance vs reality. The Landlady is very nice and generous towards Billy which causes him to ignore the sinister plot the Landlady is conjuring.
If he is very lucky, he doesn't get hurt, but usually they do. There have been people killed by ... as much as an issue as it use to be. So I guess you could also use detectors for life safety as well ...
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The Climax is were you see the tensions at its peak.
Answer:
Victory was bittersweet in light of President Lincoln's death.
D. putting yourself in the place of others and trying to situations through their eyes