Behavior Genetics

, Volume 48, Issue 6, pp 451–452 | Cite as

Nancy L. Segal and Yesika S. Monto: Accidental Brothers: The Story of Twins Exchanged at Birth and the Power of Nature and Nurture

St Martin’s Press, New York, 2018, 325 pp, ISBN: 9781250101907
  • Jeffrey M. CraigEmail author
Book Review

This book tells the story of two pairs of Colombian brothers who, until the age of twenty-five, were assumed to be two pairs of dizygotic (DZ) twins. This changed when a chance encounter led to the revelation that they were, in fact, two pairs of monozygotic (MZ) twins in which one twin from each pair had been swapped shortly after birth. A further chance event occurred when one of the authors, New York-based Yesika Montoya, saw the ‘reunited’ twins on a TV show from her native Colombia and notified Nancy Segal, a world authority on twins, who took up the story with vigour.

The book tells the story of the ‘detective work’ that followed a case of mistaken identity of a ‘dubious double’ in a butcher shop in Bogotá, the capital city of Colombia, by a colleague of one of the foursome. Investigations were carried out by this colleague and later on, the authors. The book intersperses narrative from the investigations and the resulting facts and likelihoods that emerged. Dr. Segal also...


  1. Segal NL (2011) Someone else’s twin: the true story of babies switched at birth. Prometheus, AmherstGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Centre for Molecular and Medical Research, School of MedicineDeakin UniversityGeelongAustralia
  2. 2.Environmental & Genetic Epidemiology Research, Murdoch Children’s Research InstituteRoyal Children’s HospitalParkvilleAustralia

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