1Responsibility of the creator
Victor assembles a living being and then runs from it the moment it opens its eyes, leaving it to learn fear, fire, and language alone. Every murder in the book traces back to that first abandonment: the creature kills William and frames Justine only after the De Laceys and the world reject it, and it warns Victor plainly that the wedding-night threat follows the destroyed female companion. The creature's question on the Mer de Glace, asking why it was driven from joy for no misdeed, is the book's accusation. Shelley's point: making something is the easy part; answering to what you made is the duty Victor never meets.
Characters:Victor FrankensteinThe CreatureJustine Moritz
2Isolation and the need for companionship
The creature's fall is measured in refusals of company. It watches the De Laceys through a chink in the wall, learning affection it can never share, and its one hope is a blind man who cannot see its face. When Felix drives it away with a stick and a drowning girl's companion shoots it, it vows hatred on all humanity, and its single demand is a female companion as hideous as itself. Victor, meanwhile, loses everyone by isolating himself in study and then in secrecy. The book argues that we are made monstrous less by nature than by being shut out of every door.
Characters:Victor FrankensteinThe Creature
3Dangerous ambition
The frame story pairs Victor with Walton, two men chasing glory past the limits of ordinary life, one in a laboratory, one on the ice. Victor's two years of obsessive study, neglecting family and friends, produce the creature; Walton's polar expedition nearly kills his crew before a dying stranger talks him into turning back. The creature itself names the pattern when it compares its fate to Satan's in Paradise Lost, asking its maker why it was summoned from darkness. Shelley's warning is that ambition without responsibility creates victims, and the ambition itself is never worth the cost.
Characters:Victor FrankensteinThe CreatureRobert WaltonThe De Lacey family
4Injustice and silence
Justine Moritz is the book's clearest innocent: the creature plants Caroline's locket in her pocket, she is tried, confesses falsely under pressure, and is executed. Victor knows the truth from the moment he sees the creature lurking near Plainpalais, yet says nothing, telling himself no one would believe him. His silence makes him complicit, and the creature later notes that she innocently suffered for its crime. The book's point is that witnessing evil and staying quiet is its own act, and Victor's guilt over Justine is the first crack that his later losses widen into ruin.
Characters:Victor FrankensteinThe CreatureJustine Moritz
5Appearance versus soul
The creature is born gentle: it gathers firewood for the poor De Laceys, stops stealing their food, and saves a girl from drowning. Each kindness is answered with horror because of its yellow skin and giant frame, and only the blind De Lacey, the one person who cannot see it, treats it kindly. Shelley keeps asking what the creature would have been if anyone had accepted it, and answers through its own words: malicious because miserable. The book's verdict is that monstrosity is made in the eye of the beholder and the hand that turns the beholder away.
Characters:The CreatureThe De Lacey family