Sentinel was established in 2003 as a dedicated conservative imprint within Penguin Group. 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.

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; An American Son by Senator Marco Rubio; Unintimidated by Governor Scott Walker of Wisconsin; The Secret Knowledge by David Mamet; Keeping the Republic by Governor Mitch Daniels of Indiana; Roger Ailes: Off Camera by Zev Chafets; The Tyranny of Clichés by Jonah Goldberg; and George Washington’s Secret Six by Brian Kilmeade and Don Yaeger – a runaway New York Times bestseller for more than three months.

Meet Sentinel

Adrian Zackheim

Adrian Zackheim

Founder, President, and Publisher

Adrian Zackheim joined Penguin Group in September 2001 as Publisher of Portfolio. He then took on the additional challenges of starting Sentinel in April 2003 and Current in March 2010. Previously, he was the Associate Publisher and Editor-in-Chief of HarperInformation, a division of HarperCollins that included HarperBusiness. His editorial career has also included positions at William Morrow, Doubleday, and St. Martin’s Press, and his first job was as Phyllis Grann’s editorial assistant at Putnam.

Among the many bestselling books he edited and published before joining Penguin Group were Good to Great by Jim Collins; Die Broke by Stephen Pollan and Mark Levine; The Dilbert Principle by Scott Adams; The HP Way by David Packard; and Swim with the Sharks without being Eaten Alive by Harvey Mackay. He also has a long track record of publishing books by important conservative leaders, including Margaret Thatcher, Newt Gingrich, and Bob Dole.

Will Weisser

Will Weisser

Vice President, Deputy Publisher, and Marketing Director

Will Weisser joined Portfolio as Marketing Director in 2002, before the imprint’s first book was published. In his current role as VP, Associate Publisher, and Marketing Director for Portfolio, Sentinel, and Current, he is deeply involved in all aspects of the publication process, from acquisition to packaging to budgeting. He also oversees the combined marketing and publicity department that serves all three imprints. He began his career as an intern at Simon & Schuster, and went on to various publicity and marketing positions at Pocket Books, Grove/Atlantic, Times Books, and Crown Business. Among the many prominent authors he worked with before joining Penguin Group were Larry Bossidy, Michael Hammer, Marlin Fitzwater, Juan Enriquez, and P.J. O’Rourke.

Niki Papadopoulos

Niki Papadopoulos

Executive Editor

Niki Papadopoulos joined Sentinel in 2011 as a Senior Editor. Her list of bestselling and critically acclaimed books America in Retreat by Bret Stephens; The Lion’s Gate by Steven Pressfield; and An American Son by Senator Marco Rubio.

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Bria Sandford

Senior Editor

Bria Sandford joined Sentinel in 2012. She enjoys editing leadership narratives, economic policy, history, and prescriptive career guides. Her bestselling authors include retired four-star General Stanley McChrystal, private equity executive Edward Conard, and career advice guru Jon Acuff.  She tweets at @blsandford.

Sentinel Newsroom

May 6, 2015

On Monday, Carly Fiorina launched Rising to the Challenge, her second book with Sentinel, and a sequel to her 2006 New York Times bestseller Tough Choices, which came BEFORE Hard Choices – as Seth Meyers pointed out on Late Night on Tuesday.  Fiorina announced her candidacy for the Republican presidential nomination on Good Morning America and went […]

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April 7, 2015

Sentinel had a big week with the launch of Our Lost Constitution by Senator Mike Lee (R-Utah). He hit the airwaves for Hannity, Mark Levin and Glenn Beck Radio to promote the book, which went on sale Tuesday (4/7) and hit #13 on Amazon.com and BarnesAndNoble.com. He appeared on Morning Joe, Fox & Friends,and will be […]

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June 12, 2014

Last Friday The Los Angeles Times ran a glowing review of Steven Pressfield’s The Lion’s Gate: On the Front Lines of the Six Day War, calling the book “[a] deeply reported and compellingly told ‘hybrid history’ of the 1967 Arab-Israeli war.”  

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