A recurring theme is the "invisibility" of the homeless. Link notes how passersby look through him rather than at him. This social coldness is arguably as damaging as the physical cold. Shelter takes advantage of this invisibility; he knows that if a homeless person disappears, few people—and often not the authorities—will go looking for them. This creates a suspenseful thriller while simultaneously posing a moral question to the reader about their own perceptions of the marginalized. Conclusion
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The novel is widely studied for its stark portrayal of social issues: SuperSummary Stone Cold Summary and Study Guide | SuperSummary Stone Cold Robert Swindells Free Pdf