Sentinel was established in 2003 as a dedicated conservative imprint within Penguin Group (USA) Inc. It publishes a wide variety of right-of-center books on subjects like politics, history, public policy, culture, religion and international relations. The name Sentinel symbolizes a tough-minded defense of America's fundamental values and national interests. The imprint publishes about a dozen new hardcovers per year, along with a select list of trade paperbacks.

Some of Sentinel's most noteworthy bestsellers include Do the Right Thing and A Simple Christmas by Mike Huckabee; A Patriot's History of the United States by Larry Schweikart and Michael Allen; 48 Liberal Lies About American History by Larry Schweikart; The Persecution of Sarah Palin by Matthew Continetti; The Truth About Hillary by Edward Klein; A Matter of Character by Ronald Kessler; Do-Gooders by Mona Charen; and The War on Christmas by John Gibson.


Adrian Zackheim
Founder, President, and Publisher

Adrian Zackheim joined Penguin Group in September 2001 to launch Portfolio, the company's business book imprint. He took on the additional role of founder and publisher of Sentinel in April 2003. He has a long track record of publishing books by notable conservatives, including Margaret Thatcher, Newt Gingrich, and Bob Dole. Before coming to Penguin Group, he was the associate publisher and editor-in-chief of HarperInformation (a division of HarperCollins) and has held various editorial positions at William Morrow, Doubleday, and St. Martin's Press.


Will Weisser
Vice President. Associate Publisher, and Director of Marketing

Will Weisser joined Pengun Group in July 2002 and has been Sentinel's Director of Marketing since its inception. He began his career as an intern at Simon & Schuster in 1989, and went on to various publicity and marketing positions at Pocket Books, Grove/Atlantic, Times Books, and Crown.