Twin expert Nancy L. Segal has a new book, Someone Else's Twin: the True Story of Twins Switched at Birth about a pair of identical twins who were mixed up at the hospital, and one went home with a lady who had just given birth to a singleton, while the mother of the twins took home one of her babies and the other lady's baby. The identical twins ran into each other in a shop 28-years-later.Drama ensued.

Segal also has a book coming out in 2012 summing up the famous Minnesota Twins study of separated twins, for which she was one of the researchers.