Story Structure — 4 Plot Phases
A Search for Answers
Libby and Marco want a child, while Marco believes a curse linked to Narval may explain their difficulty conceiving. They seek help from Libby's old friend, geneticist Dr. Seymour Livingston, but the first consultation offers no answer.
Key Events
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The Couple Wants a Child — Libby and Marco want a child but have been unable to conceive. Characters: Libby, Marco
Location: Not specified
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Marco Fears a Curse — Marco believes his community's warning about leaving Narval explains their infertility. Characters: Marco
Location: Not specified
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They Seek Genetic Advice — Libby and Marco consult Libby's old friend, geneticist Dr. Seymour Livingston. Characters: Libby, Marco, Dr. Seymour Livingston
Location: Dr. Seymour Livingston's consultation
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Marco's Background Questioned — The geneticist asks about Marco's background and learns he has never visited his parents' Caribbean island. Characters: Marco, Dr. Seymour Livingston
Location: Dr. Seymour Livingston's consultation
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Consultation Ends Unresolved — The consultation produces no answer, and the couple continues seeking an explanation. Characters: Libby, Marco, Dr. Seymour Livingston
Location: Dr. Seymour Livingston's consultation
The Unusual Variant
Dr. Seymour Livingston studies genetic samples and finds evidence of an unusual variant in Marco. He considers whether Marco could represent a distinct human species and raises gene editing as a possibility with risks.
Key Events
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Research on Conserved DNA — Dr. Seymour Livingston studies samples in connection with his research into ultra-conserved genetic elements. Characters: Dr. Seymour Livingston
Location: Not specified
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Unusual Variant Detected — Results suggest Marco carries an unusual genetic variant. Characters: Marco, Dr. Seymour Livingston
Location: Not specified
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A Possible Species Difference — The geneticist considers whether Marco could represent a distinct human species. Characters: Libby, Marco, Dr. Seymour Livingston
Location: Not specified
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Gene Editing Considered — Gene editing is raised as a possible aid to conception, alongside medical risks and unwanted attention. Characters: Libby, Marco, Dr. Seymour Livingston
Location: Not specified
Samples from Narval
The geneticist asks Libby and Marco to help collect samples from people in Marco's community. Some are wary of the research, but the couple and geneticist gather cheek swabs to see whether the trait is shared.
Key Events
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Research Turns to Narval — The geneticist asks the couple to help collect samples from other people from Narval. Characters: Libby, Marco, Dr. Seymour Livingston
Location: Narval community
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Community Members Wary — Some people from Marco's community are wary of the proposed research. Characters: Libby, Marco, Dr. Seymour Livingston
Location: Narval community
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Samples Collected — The couple and the geneticist gather cheek swabs to test whether the variant is shared. Characters: Libby, Marco, Dr. Seymour Livingston
Location: Narval community
The False Verdict
Dr. Seymour Livingston says Marco is the only person with the unusual gene and claims he cannot help. When Libby and Marco question him, he admits that he lied and that everyone else shares the gene. His discussion of research, consent, and publication is cut off before his intentions or the couple's next steps are clarified.
Key Events
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The Geneticist Gives His Verdict — Dr. Seymour Livingston says Marco alone has the unusual gene and that he cannot help. Characters: Libby, Marco, Dr. Seymour Livingston
Location: Not specified
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The Results Were a Lie — Questioned by the couple, the geneticist admits he lied: everyone else shares Marco's gene. Characters: Libby, Marco, Dr. Seymour Livingston
Location: Not specified
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Consent and Publication Questions — The geneticist raises consent concerns and his thought experiment about publishing; his explanation is cut off. Characters: Libby, Marco, Dr. Seymour Livingston
Location: Not specified