The Lord of the Flies is a character in the novel named after him, also known as Beelzebub, a representation of the devil, symbolizing the dark, savage impulses of humanity.
The words that Offred plays in Scrabble with the Commander demonstrate her intelligence and education, as well as the power dynamics at play in their relationship.
Huck exposes the fraudulence of the duke and king's claims to be long-lost brothers of the deceased Peter Wilks by revealing their inability to correctly identify personal items and family members.
Frankenstein figures out that the Monster killed William from the evidence and clues that he gathers, including the marks found on William's neck and the Monster's presence near the scene of the crime.