Plot Summary
Chapter 21 opens with Victor Frankenstein brought before Mr. Kirwin, an elderly and benevolent magistrate, to face accusations of murder. Several witnesses testify: fishermen recount discovering a young man's body on the beach, strangled with black finger marks on his neck, and Daniel Nugent swears he saw a boat matching Victor's near the shore shortly before the body was found. A woman corroborates seeing a single man push off from the beach around the same time. The circumstantial evidence mounts against Victor, who grows visibly agitated when the strangulation marks are described, reminded of his brother William's murder.
Mr. Kirwin orders Victor taken to view the corpse, hoping to gauge his reaction. Victor enters the room confident in his alibi—he was on the Orkney Islands at the time of death—but is shattered to discover the victim is his beloved friend Henry Clerval. He collapses upon the body, crying out that his "murderous machinations" have claimed yet another life. Victor is carried from the room in convulsions and falls into a violent fever lasting two months, during which he raves about being the murderer of William, Justine, and Clerval. When he finally regains consciousness, he finds himself imprisoned, attended by a callous nurse who bluntly tells him he would be better off dead.
Mr. Kirwin proves unexpectedly kind, providing Victor the best room in the prison and arranging for medical care. He informs Victor that his father has come to visit, and the reunion restores some of Victor's will to live. Eventually, the grand jury dismisses the murder charge after evidence proves Victor was on the Orkney Islands when Clerval's body was found. Victor and his father depart Ireland by ship, bound for Havre-de-Grace. As Victor lies on the deck at midnight, he reflects on his life—from his happy childhood in Geneva to the catastrophic creation of the Creature—and takes a double dose of laudanum to sleep, only to be haunted by nightmares of the monster's grasp on his throat.
Character Development
Victor reaches his psychological nadir in this chapter. The discovery of Clerval's body pushes him past the breaking point: his two-month fever and delirious confessions reveal a man consumed by guilt who can no longer distinguish between indirect and direct responsibility for the deaths around him. His suicidal ideation becomes explicit—he considers confessing to the murder and repeatedly attempts self-harm, requiring constant surveillance. The laudanum dependency introduced at the chapter's end signals Victor's deepening inability to cope with reality. Mr. Kirwin functions as a moral counterpoint, a man of genuine compassion operating within the bounds of institutional justice, whose kindness Victor can barely recognize through his despair. Victor's father, Alphonse, serves as a lifeline to the domestic world Victor has all but destroyed.
Themes and Motifs
The theme of consequences of unchecked ambition reaches a devastating crescendo as the Creature's vengeance claims Victor's closest friend and intellectual companion. The recurring motif of false accusation and unjust imprisonment mirrors Justine Moritz's fate, casting Victor into the same institutional machinery that destroyed an innocent woman—though Victor, unlike Justine, is actually acquitted. The chapter deepens the theme of isolation: even when surrounded by people, Victor is utterly alone with his secret knowledge. The motif of darkness and light pervades the chapter, from the moonless night of Clerval's discovery to the "dense and frightful darkness" Victor sees around him even in sunlight, penetrated only by the glimmer of accusing eyes.
Literary Devices
Shelley employs dramatic irony as Victor confidently approaches the corpse, unaware it is Clerval, while the reader senses the impending horror. The doppelgänger motif intensifies: Victor and the Creature become increasingly interchangeable as Victor raves about being a murderer and feels phantom fingers on his neck. Shelley uses pathetic fallacy in the stormy night of the murder and the midnight sea crossing that closes the chapter. Victor's rhetorical question—"Of what materials was I made that I could thus resist so many shocks?"—functions as a bitter echo of the Creature's own unnatural construction. The chapter's frame narrative structure is subtly reinforced as Victor's fevered confessions in a language only Mr. Kirwin understands mirrors the layered telling and withholding of truth throughout the novel.