Two highly successful editors from the Penguin Group have announced that they will leave the company to head up a new division at Random House. “The move by the editors, Celina Spiegel and Julie Grau, was a major loss for Penguin, where [the imprint they brought to prominence] is celebrating its 10th anniversary and is having a stellar year, with nine of its books having reached The New York Times’s best-seller list, two of them climbing to No. 1.”