68 pages 2-hour read

The Deep

Fiction | Novel | Adult | Published in 2015

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Part 2Chapter Summaries & Analyses

Content Warning: This section of the guide includes discussion of disordered eating, child abuse, graphic violence, and death.

Part 2: “Descent”

Part 2, Chapter 1 Summary

Aboard Hesperus, Luke waits while Al prepares the submersible for their descent. He reflects on how his life stalled after his son, Zachary, disappeared seven years earlier. This triggers a memory of Zach’s childhood fear of monsters he called Fig Men (his misunderstanding of Luke’s telling him that they are “figments” of his imagination). Luke’s wife, Abby, urged kindness, so Luke staged a monster hunt. He sprinkled cardamom powder to reveal tracks and placed obsidian chunks in which to trap them. The next morning, Zach found the obsidian, and Luke told him that the Fig Men were trapped within. Zach decided to keep it on his nightstand as a warning to other monsters.


In the present, Al asks if he is ready. Luke agrees, but a deep dread settles on him.

Part 2, Chapter 2 Summary

Luke gathers his things and follows Al into the cramped cockpit of the Challenger 5. He settles into the sub, designed for a vertical drop. Al seals the hatch, and a workman smears pressurized foam sealant around the porthole. Al starts the air recycler, and a chemical tang fills the cabin.


A crane releases the sub into the ocean. Water climbs the porthole, and the new moon is the final thing Luke sees before the surface vanishes.

Part 2, Chapter 3 Summary

As they sink, Al explains that lead weights drive their fall. Nitrogen stiffens Luke’s joints, and aches settle into his body. In the lightless Midnight Zone, Al steadies the sub so they can watch drifting bioluminescent plankton. The glow sparks a memory of the snowy night Luke first met Abby.


A massive sperm whale glides past, slamming the sub with its wake. Al notes how rare it is to see a whale at this depth and admits a superstition about tempting the deep too many times.

Part 2, Chapter 4 Summary

The descent continues, and Luke slips into a nightmare of his childhood. He recalls how his mother, Bethany, became fixated on eating after a disabling injury and turned cruel, destroying whatever he loved, including his comic books. In response, Luke developed an alternate superhero persona he called the Human Shield, whose power was that he was impenetrable. The dream peaks when she enters his bed; he resists her for the first time and runs.


Luke jolts awake in the sub. Al says he has been talking in his sleep, repeating a warning to get behind him.

Part 2, Chapter 5 Summary

At 20,000 feet below the surface, a swarm of viperfish hammers the Challenger 5, their teeth banging the porthole and tearing at the foam seal. Al throws the sub into a rapid plunge to break the attack. The change racks their bodies; Al wipes blood from her nose while Luke smears a bloody tear from his eye.


Before they settle, a giant squid’s tentacle glues onto the porthole and its beak pecks at the glass. Al snaps off their lights, then hits the powerful spotlights, driving the squid away. She resumes the drop, remarking on how abnormal the attacks feel. They share an unspoken fear that something is trying to stop them.

Part 2, Chapter 6 Summary

With no radio, Al fills the silence by describing the Trieste. Engineers assembled the egg-like structure on the seafloor from a flexible, pressure-resistant polymer. She tells Luke about Otto Railsback, the first technician to enter the sealed habitat, who made it livable by himself. Al remembers getting lost in the Cave of the Winds as a teenager and compares the heavy, mineral smell of that darkness to the odor from Trieste the day Otto first opened it. After he finished the setup, Otto was found dead in one of the tunnels—the station’s only recorded death before the current crisis.

Part 2, Chapter 7 Summary

They sink deeper, and the pressure and isolation distort reality. Luke feels it happening as his recollection of Abby frays; he cannot hold her full face in his mind. The environment feels alien and resistant. Luke fights to keep his thoughts straight, sensing that nothing belongs here.

Part 2, Chapter 8 Summary

Near the bottom, a steady fall of marine snow, the debris from the ocean above, thickens outside. Al angles the sub for their final approach. In the dark, specks of light appear and align into the shape of the Trieste. Luke expects relief, but the sight drives a visceral rejection through him. Every instinct urges him to go back to the surface, even as Al continues the careful glide toward the station.

Part 2 Analysis

These chapters establish a link between psychological vulnerability and external horror, primarily through an examination of The Vulnerability of Unresolved Trauma. The narrative structure, which intercuts the physical descent with an involuntary psychological descent into Luke’s past, posits that the abyss is as much an internal landscape as it is a physical location. Luke’s memory of the “Fig Men” is significant, transforming a seemingly heartwarming anecdote about fatherhood into a vessel for cosmic dread. Zach’s description of the creatures as having “lived a million years” transcends childhood fantasy (67), investing the imaginary monsters with a quality of ancient existence that prefigures the novel’s antagonists. This moment suggests that some terrors are not mere figments but intuitions of a deeper reality. This foreshadowing is amplified by Luke’s subsequent nightmare of his mother, Bethany. The dream is a dissection of abuse and its resulting psychological scars. The creation of his alter ego, the Human Shield, reveals a lifelong coping mechanism built on absorbing pain—a predisposition that makes him an ideal candidate for the mission and a desirable host. The descent into the trench physically enacts the process of traumatic recall, forcing Luke’s buried memories to the surface under immense pressure.


The theme of The Fragility of Mental Health Under Extreme Pressure is literalized during the submarine’s journey, using the crushing weight of the ocean as a direct metaphor for the pressures under which the characters' minds are placed. The text grounds its exploration of the mental effects in physiological phenomena. The physical toll of the descent—nitrogen buildup in the joints, bloody tears caused by pressure changes—serves as an objective correlative for the beginning of the breakdown of cognitive function. Chapter 23, in its departure from linear narration, functions as a thematic statement on this concept. Its generalized perspective suggests that this disintegration is not unique to Luke but is a universal human response to the anathema of the deep. This section argues that the human psyche is incompatible with such an environment. The shared misreading of Westlake’s bloody message—where Luke sees what he reads as “Ag Mey” and Al sees “Something-Man” (75)—is a critical narrative moment. It demonstrates the collapse of shared reality, indicating that the pressure is already compromising their ability to interpret information objectively. This perceptual schism foreshadows the dissolution of consensus reality that awaits them on the Trieste, where personal traumas will be manifested as individualized horrors.


The descent is structured as a symbolic journey into a primordial subconscious, with the deep functioning as an active, malevolent antagonist rather than a passive setting. The sequential passage through the ocean’s zones—from the surface to the Midnight and Abyssal Zones—maps onto a psychological journey from the conscious mind into unknown territories. This symbolism is reinforced by the escalating series of hostile encounters with deep-sea life. The attacks by the viperfish and the giant squid are framed by Al as unnatural. Her observation that the creatures seem coordinated, as if something is trying to stop them, elevates the encounters from random acts of nature to calculated assaults by an intelligent, unseen force. This subverts the trope of the wondrous deep-sea journey into one of relentless hostility, aligning the novel with a worldview where the natural world is not indifferent but actively malevolent toward human intrusion. The ocean is thus characterized as an entity with its own agency, a guardian at the threshold of a forbidden domain. Luke’s visceral revulsion upon first seeing the Trieste confirms this; the structure is not a beacon of human achievement but an alien tumor within a hostile organism.


Authorial craft in these chapters builds an atmosphere of dread through characterization and foreshadowing. The narrative withholds direct engagement with the primary horror, instead using the confined submersible to cultivate psychological tension. Al’s character, initially a bastion of competence, is revealed to be as susceptible to the environment’s psychological corruption as Luke. Her anecdotes serve as microcosms of the novel’s broader themes. Her story of getting lost in the Cave of the Winds, with its memory of a darkness that felt heavy and “hostile,” directly parallels their current situation. The description of the smell that first emerged from the sealed Trieste—a “raw mineral smell; it had presence, an aliveness” (87)—personifies the station itself, imbuing it with the same primal malevolence. Similarly, the story of Otto Railsback, the technician who single-handedly made the station habitable only to die alone within it, is a chilling precedent. His solitary fate foreshadows the themes of isolation and sacrifice that define the Trieste, establishing it as a place that consumes those who enter it. Through these nested narratives, the station becomes a repository of dread and failure before Luke even arrives.

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