Guest column by Jennifer McMahon, who grew up in suburban Connecticut, and went to Goddard College. She is the bestselling author of Promise Not to Tell, Island of Lost Girls, Dismantled, and Don’t Breathe a Word. Her newest novel is The One I Left Behind (Jan. 2013, William Morrow), which received starred reviews in Publishers Weekly and Kirkus. She lives in Vermont with her family. Visit her website or connect with her on Twitter.