Threshold Editions is an imprint of Simon & Schuster — the publishing division of CBS Corporation — specializing in conservative non-fiction. Louise Burke is the publisher, Anthony Ziccardi is the deputy publisher, and the imprint's senior editors include Mitchell Ivers, Kathy Sagan, and Abby Zidle. Mary Matalin is its editor-in-chief.Threshold was launched in 2005 after Penguin Group and Random House started their own conservative imprints, Sentinel HC and Crown Forum.