Alison Callahan, who recently left Doubleday, has joined Simon & Schuster's Gallery Books imprint as executive editor. Callahan, who will start her new job on December 2, is best known as the acquiring editor of the debut novel The Night Circus by Erin Morgenstern. That book, which was notably bought for a rumored seven figures, went on to sell nearly 900,000 copies to date, according to S&S.

Callahan was also an executive editor at Doubleday, and had been at the Random House imprint since 2007; before Doubleday, she worked at HarperCollins. Speaking to the hire, Jennifer Bergstrom, publisher of Gallery, said: "Alison has a keen eye for novels that are both beautifully crafted and immensely readable. I’m a huge fan of her past acquisitions and can’t wait to see what she will bring to us."

Other books Callahan acquired include Peter Straub's A Dark Matter and Noah Hawley's The Good Father.