This undated publicity photo provided by G.P. Putnam’s Sons shows actress Samantha Futerman, left, and her twin sister, Anais Bordier. Futerman is collaborating with Bordier on a book about her improbable discovery that she had an identical twin. Putnam announced Tuesday, July 23, 2013, that the book is currently untitled and is scheduled to come out in the fall of 2014. (AP Photo/G. P. Putnam’s Sons, Liza Pulitzer)