Kate White always knew she wanted to write suspenseful thrillers, even while she was serving as the Editor-in-Chief of Cosmo for fourteen years, but it took her time to find the right writer's cocktail. Kate tells Zibby why she wanted such a large ensemble cast for her latest whodunit novel, The Fiancée, as well as how she managed to make so many characters each so memorable. She also shares how her own experience as a stepmother influenced her protagonist and what twisting story she plans to write next.